In the standard control Panel.
In a matrix field I have 2 safecracker fields.
Every time it uploads 2 copies of the file with a 1 on the end of one of them, and in the entry edit screen it shows the filename with a 1.

Safecracker 1.0.0 Build: 20101019
EE 2.1.1 Build: 20101020

Is this when you publish a new entry or when you are editing an entry? Are you filling out one cell and leaving the other blank? Or are you filling both? What I’m asking for is the steps I can take in my test environment to reproduce your results.

Does the same on Publish new or edit existing.
Either leaving one blank or both filled.

I’ll send you a login by PM so you can have a look.

Perfect, thanks.

I found a bug. I’m going to email you a new version to test out for me.

That fixed it.
Thanks Rob