%item-url% exception

[raybob]

See the attached file, start at the bottom and go up a bit to where it says %item-url%.

This is becoming a problem because without valid input, the thumbnail generation program hangs the entire server indefinitely.

A temporary fix for this is replacing %item-url% with %url%%item-name%

[rejetto]

i tried to give a look, but it's not easy to understand
can you find a way to let me reproduce the error?
try to understand what is triggering it