That's the message I keep getting when I try to upload a file to an album. It already has one file, but for some reason, I upload the picture but when I go to save it to the album is belongs to, that's what I get. Anyone have any ideas what this could be?
Do exactly as suggested in the docs, sections "upload troubleshooting" and "asking for support on upload issues"
Should I post what the debug information says?
No!
from documentation :
QuoteWhen asking for support on the coppermine forum, post a link to your site and a test user account (the test user mustn't be in the admin group!) with upload privileges, with the above mentioned settings in place - this way, supporters can see the error messages as well. Do not post debug_output unless requested. If you want fast results, you should disable admin approval for the group the test user is in, so supporters can tell instantly what is wrong without needing to double-check.