We have reverted the available GIMP Portable release to 2.8.22. The latest GIMP releases of 2.10.0, 2.10.0-2, and 2.10.2 all shipped with broken 32-bit Windows builds. In these packages, GIMP is unable to open, save, or export files even when newly installed on a clean version of Windows. As this renders the app non-functional, we have chosen to revert to an earlier functional version until the bugs in the current release are fixed.
User who have already upgraded can remove their existing GIMP Portable 2.10.x build and reinstall GIMP Portable 2.8.22. Platform users can right click to uninstall their 2.10.x build and then install GIMP Portable 2.8.22 from the platform's built in app store. We will not be pushing an automatic downgrade to our platform users at this time. If you have archived plugins in the newer copy (the updater archived your plugins within the Data directory on upgrade to 2.10.x), please manually copy them to a safe location first.
Our apologies for any inconvenience this may have caused.