You can find the fixed versions of the Icon Uploader for PC and Mac on my Drive: Insanejournal Icon Uploader
You can find instructions for use on Tess' site: Icon Upload
For those wondering what was wrong: In the upload file, the URLs needed to change to HTTPS, and the flag of -k needed to be added to the call to CURL. It also required an updated version of CURL for PC
ETA: On Windows 10, you need to right-click the batch file and "Run as Administrator" for this to work. Doing so on Windows 11 will not give you the desired outcome as it will upload all of your temp images.
You can find instructions for use on Tess' site: Icon Upload
For those wondering what was wrong: In the upload file, the URLs needed to change to HTTPS, and the flag of -k needed to be added to the call to CURL. It also required an updated version of CURL for PC
ETA: On Windows 10, you need to right-click the batch file and "Run as Administrator" for this to work. Doing so on Windows 11 will not give you the desired outcome as it will upload all of your temp images.