03-28-2019, 10:30 AM
Since Gimp won't open ZIP files, I assume that Engrampa makes a temporary version of the file somewhere.
Check if that copy of the file is still open by some other process using lsof /path/to/the/file. It is possible that Gimp check that the file is writable, which is not the case if it is still open by some other process.
Check if that copy of the file is still open by some other process using lsof /path/to/the/file. It is possible that Gimp check that the file is writable, which is not the case if it is still open by some other process.