ioBanana v19 and v19-free have this problem due to a modification on imdb side.
There's no quick fix for those versions (and there won't be any).
ioBanana v20 doesn't have this problem anymore. You can try v20rc1 (available to foundation members) if you want. Remember it's not considered as stable.
You can also continue to use ioBanana v19 and replace the:
Code:
OnUploadComplete = EXEC ..\scripts\ioBanana.exe upload
event with:
Code:
OnUploadComplete = EXEC ..\scripts\ioBanana.exe zscheck
OnUploadComplete = EXEC ..\scripts\ioBanana.exe transferlog
You won't get all the features but it'll skip imdb check.