limit of importing files

[hartmut]

Hello,
I use UR 3.0 and wanted to import a lot of files.
Suddenly the import stopped UR di not hang)
After trying to import the remaining files or to import fils in another database a received a message box
"There are still other files to import"

Okay I deleted the contents of the key "selfile" in the Registry and could go on.
My question is there a limit for files to be imported for an import session?
thank you and regards
Hartmut