Basic functionality = the *run* button not working

[Hans82031]

I just want to assemble a a number of pdf files into one document.
My procedure:

• setting up the file list as usual
• defining the output file
• hit the "run" button but nothing is happening:
  . no progress in the run bar
  . no file produced
  I'm not sure: -is it mandatory to fill anything else?
  e,g,, the other settings that are listed?
  Please help: I#m working on a Tax Declaration:
  I did not have this problem last year, with an older version of PDFsam
  Thanks so much.

[Hans82031]

Further to my trying to work successfully with PDFsam, I installed the 32-bit Version of PDFsam (v.3.3.7).
I was successful to produce the merged file.
I appreciated the increased clarity (e.g. no columns except the necessary ones, like filenames, date of the file,
One problem I encountered: I entered an illicit file-name, using a colon {:] which prevented the run command to function.
Would it be possible to issue the error warning Windows issues in these cases?
Greets, Hans