Related Products for WP e-Commerce uses information available within the Single Product template to display related Products that belong to the same Product Category.

WP e-Commerce Compatibility

  • WP e-Commerce 3.7 ready (up to 3.7.8)
  • WP e-Commerce 3.8 ready (up to 3.13.*)


The latest release can be downloaded from your My Account page.


Looking for support, a copy of the readme, Plugin updates, Ideas or usage instructions? Check out our Documentation for Related Products.



  1. elijah UG Elijah

    I think I’m going to buy this

  2. Amel US Amel

    I noticed that many of the descriptions and information are about placing relative products that are in the same category. What if I wanted to place related products in different categories? An example would be that I have a website that sells building material and I have a category “Roof” and “Windows” and want to cross sell windows when someone is looking at roofs and roofs when someone is looking at windows.

    Is this possible with your plugin?

    • Michael Visser au Michael Visser

      Hi Amel, you can manually select Products, once support for this Plugin stabilises I’ll work to introduce per-Category controls so you could have Windows appearing by default for Products belonging to the Roofs Category. In the meantime please manually select related Products from Products > Add/Edit Products for each Product.

  3. Ferdinand ID Ferdinand

    More info:
    Just found out when I go to the product page with “Related Products” activated, the following error is occured:
    Warning: call_user_func_array() []: First argument is expected to be a valid callback, ‘wpsc_rp_init’ was given in …….wp-includes/plugin.php on line 395
    please help

    • Michael Visser au Michael Visser

      Hi Ferdinand, looking at this now. 🙂

    • Michael Visser au Michael Visser

      Hi Ferdinand, can you please get in touch or provide additional information, what version of WordPress are you using also did you extract the Plugin files to /wp-content/plugins/wp-e-commerce-related-products/…? Thanks Ferdinand 🙂

      • Ferdinand ID Ferdinand

        I used the upload plugin in the wp admin to extract the plugin. So if I go to ftp i can see there is new folder called /wp-content/plugins/wp-e-commerce-related-products/
        but there is no settings > related products. Please refer to

        Can we solve this via email instead 🙂

      • Michael Visser au Michael Visser

        Let’s look into this together, shoot me an e-mail 🙂

      • Ferdinand ID Ferdinand

        Hi Michael

        can you email me for how to solve this?
        I have tried to us your contact us form, but is not working, it just keeps loading but never finish.

        I need it ASAP, as the client requires this to be done quick

      • Ferdinand ID Ferdinand

        Problem is fixed. Thanks alot Michael for the support.

  4. Ferdinand ID Ferdinand

    just purchased your Related Products plugin. But after activating in plugins, I cant find any option for using this. I have read the readme.txt, it said for wp e-commerce 3.8 go to settings > related products.

    I cant find link related products under settings, I have looked all places as well

    Please help

  5. Emma NZ Emma

    Hi Michael,

    Thanks for your help earlier – I also am having trouble with the Related Products plugin.

    I’ve installed it, activated it and updated the settings, but all that I see displayed under each of my products is the header, no actual list of products shows up. I’m probably doing something wrong… but would really appreciate your help as I’ve tried a few options: eg automatic selection of related products, specified selection of related products, manual display of the related products section and displaying it in different layouts in different areas of the page… but I never see any products 🙂

    Would appreciate your help on this! The site I’m working on is and the plugin is currently active so you can see the result.

    Thanks in advance!

    • Emma NZ Emma

      Hi again Michael,

      Any thoughts on why I mightn’t be getting any related products to display?


      • Michael Visser au Michael Visser

        Hi Emma, shoot me an e-mail from the Contact page and I’ll take a look at this, please ensure you’re running the very latest Plugin update as WP e-Commerce 3.8.2 broke support after changing the wpsc_version WordPress option field to store minor Plugin versions instead of major (e.g. 3.8.2 instead of 3.8 as expected). 🙂

  6. RW GB RW

    Hi there, I have this plugin and it installed and works perfectly, no problems.

    My only question is, can I force the pictures / thumbnails to appear as a certain size? At the moment it defaults to the main thumbnail size and I’d like to be able to have the related Products images show up as a different size.

    Thank you

    • Michael Visser au Michael Visser

      Hi RW, thanks for the suggestion. This is a feature I intend to include in a future Plugin update as I too have noticed there is limited thumbnail support, once I get my head better around CPT’s I’ll include the feature 🙂

  7. Conor AU Conor

    Hi Mike, since upgrading WPeC 3.8 and Gold cart today I have been on the computer fixing all sorts of things, one that still has me stumped is the related products feature. They all seem to have vanished from the site and I can’t see anywhere, where to assign products to other products within the ‘product setting area’. I can see basic options in the General settings menu? but that’s it. Any clues.

    • Conor AU Conor

      Since posting, I can now see the options in the product settings (I reinstalled) but still it would seem that previous work relating certain products to others has been lost? any idea where to look to find that info…

      • Michael Visser au Michael Visser

        Hi Conor, I’ll take a look at this in the morning, the data is very likely intact and just needs the update script between 3.7 -> 3.8 modified, I’ll update this comment shortly.

  8. Robert Hauk AT Robert Hauk

    I purchased your product last week. I can’t use it to my disbelief because it breaks my layout completely… I use Magic Zoom, WP 3.2 and WP e-Commerce 3.7. When I activate the plugin it changes the first picture of my gallery. When I click on it all the zooming function is gone. Pls advise.

    • Michael Visser au Michael Visser

      Hi Robert, Related Products adds a standard table with CSS id and tables to the Product template, it’s possible there is a Javascript conflict between an ID of the Related Products images. Shoot me a link with more details via comment or e-mail so I can look into this further with you 🙂

  9. Lowell US Lowell

    I just bought the plugin and I’m having a few issues. The biggest problem is that within a specific product page, underneath the related products I see 2 radio buttons with identical labels:

    Display Related Products for this product
    Display Related Products for this product

    I changed the selection and now no related products show for this product. I’ve tried changing it back and manually choosing my products but it always defaults back to the “auto choose” option and nothing I change will save on that product page (the other products work fine).

    Any ideas?

    • Asher AU Asher

      I am having this exact same problem.

    • Asher AU Asher

      Any luck on this one I have a site launch depending on it now 3 weeks late and have requested help via email multiple times

    • Michael Visser au Michael Visser

      Hi guys, just let loose the 1.4.2 Plugin update to patch support for WP e-Commerce 3.8 official and clear up the mis-label on the Add/Edit Products page. I’m really happy with this update as have cleaned up the codebase for 3.7 support too… will be cooking in some new features for 1.5, stay tuned 🙂

    • Michael Visser au Michael Visser

      Hi scobou, can you please get in touch; it looks like that Product may not have a Product thumbnail generated at the correct size, I’d be keen to look at it with you.

      • scobou US Scobou

        I deleted and uploaded a new product image for it, but still had the same results.

        How can I tell if the product thumbnail was generated correctly? The product page seems to show the correct size.

      • Michael Visser au Michael Visser

        Hi scobou, shoot me an e-mail with login details, I’ll take a look at this one with you 🙂

  10. MasterBip CL MasterBip

    We are goin’ to buy this plugin … but first i must be sure in one thing.
    Is this plugin compatible and works with the free wp e-commerce version?

    • Michael Visser au Michael Visser

      Hi MasterBip, that’s correct! All of my Plugins work with the free and Gold Cart-enabled releases of WP e-Commerce for WordPress.

      • MasterBip CL MasterBip

        That’s good!
        Give me a few minutes to get the process and we’re done. Thanks!

    • Javier Riveros CL Javier Riveros

      Hi there. We bought this plugin a month ago or so … and just a week ago +/- you release a new version … can we have upgrades or when we bought it we bought it “as it is” ?

      • Javier Riveros CL Javier Riveros

        Hi there again. I want to know if there’s a way to order the related products, I think the html is listed using some ID order, but is not really the best way to me. Can I change the order? How?


      • Michael Visser au Michael Visser

        Hi Javier, I’ve considered ways to impliment this but haven’t locked anything down yet. I’ll look at extending this and other Plugins once WP e-Commerce 3.8+ support is completed across the suite 🙂

  11. Michael Visser au Michael Visser

    Hi Wade, I’ll be reviewing the migration to WP e-Commerce 3.8 this evening.

    Right now the migration script to take custom Product meta details out of the old tables and port them over to custom Post meta is working I just need to link up the records. Look forward to getting this one onboard so 3.8 beta 2 users can enjoy my Plugins.

  12. Wade Rex US Wade Rex

    Hi Michael,

    I am testing the 3.8 WP E-commerce beta and there seems to be a bug with the current version of related-products.

    After selecting the related items for a product, updating doesn’t save the selection.


    • Michael Visser au Michael Visser

      Hi Wade,

      Related Products is now WP e-Commerce 3.8 compatible 🙂

  13. Anything Graphic US Anything Graphic

    Ur the best man! Appreciate it 🙂

  14. Michael Visser au Michael Visser

    Hi Kevin, 1.7.3 has been released resolving the URL issue of Related Products. Download from your original Purchase Receipt or Premium Plugin Updates page 🙂

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What does this Plugin do?

Related Products is a WordPress Plugin to extend the WP e-Commerce Plugin by displaying related Products to site visitors, this provides a cross-selling opportunity to other Products available from your store.

It automatically selects related Products based on the Category that the currently displayed Product belongs to, support is also included to manual specify which related Products to display. This has the advantage of displaying? a 'set' of Products (e.g. Silver necklace, silver bracelet, silver watch, etc.).

Can I manually define what related Products are displayed against each Product?

Yes you can using the simple Related Products widget appearing on the Add/Edit Products page, just select the Products you wish to display and save changes. Read more about this feature on the Usage page for Related Products.

Does the current Product being displayed appear in the Related Products?

Nope, Related Products filters out the current Product from the list of available Products to display.

Can I change the positioning of Related Products on the Product detail page?

Related Products uses the standard templates 'hooks' that comes with WP e-Commerce to display the Related Products element. You can manage the position by the Position drop-down option within Store > Upgrades > Related Products, that's not all, you can even use a template tag for absolute control. Read the Usage page for more information.


Related Products comes with a Quick Start document (readme.txt) to help with installing the Plugin. Additional support can be found from the Contact page or methods below.

Urgent Support

If you find yourself needing immediate support for your purchase use the Premium Support page or Live Support button.

Related Products Forum

If you have any problems, questions or suggestions please join the members discussion on our Related Products forum.