Overview

This article provides a solution for when uploading a theme with the same name as one that was previously uploaded, even though the old theme was already deleted, gives you the following error message:

Zip file could not be uploaded - it may be invalid.

Information

Environment: Versions 9.0.6 and 9.0.7.

Process

1. Open the theme.xml file, and rename the name value:
   
   Example:
   Replace <name>MyTheme<name> with <name>MyTheme2<name>
2. Rename the zip file containing the theme to match the name you just changed in the theme.xml file.
   
   Example:
   Rename MyTheme.zip to MyTheme2.zip
3. Upload the modified theme.
   
   1. Go to Admin Console > System Tab.
   2. Select the Settings tab.
   3. From the list on the left-hand side, select the Themes option.
   4. Within the Themes page, you need to select Choose File and select the zip file.
   5. Click on Upload Theme.
      

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Confirmation

You will be able to upload the theme successfully.