A little workaround for the second command:
Add Spaces before and behind Numbers (if not dots are present):Rename REGEXP PATTERN "(.*)(([^0-9 ])([0-9]+)|([0-9]+)([^0-9 ]))(.*)#" TO "\1\3\5 \4\6\7" AUTORENAME
Rename FINDREP=ext PATTERN " ." TO "."
Rename FINDREP=ext PATTERN ". " TO "."
With this your example "Kocka2004.z80.zip" will become "Kocka 2004.z 80.zip" which is nearly what you want to have except the Space between "z" and "80".
To delete this last Space you can use a Button that deletes a Character from a certain Position counted from the end of the filename.
You'll find this Button here:
[url]Remove characters from selected folder and file names]