The package is correct, as it uses the same version check method as phpBB itself does
. However the problem is caused that we host our compare files on a different location and your host blocks the script from reaching these files. I'll be moving our version files to the same location as phpBB's to work around this limitation.
For now you can work your way around this by removing
this version check will disable the STK if you are running an outdated version, removing this line will disable this security precaution. Only apply this change if you know what you are doing and how to get informed on new releases without it!