As Nicola said, crashes can happen if you still enabling 2003 qual rules in v1.042. Open your GP4 Tweaker program, go to tweak number 16: 2003 Qualifying Rules, then give checkmark ion "default" checkbox. Apply the change.
For correct file location in beta 3 usage, use this guidelines:
gp4tweak.dll ->
must be in GP4 directory.
gp4tweak.ini ->
must be in GP4 directory.
gp4tweak.log -> handled internaly, can be deleted.
gp4tweak.bin -> handled internaly, do not move or delete it.
gp4tweak.msg -> no longer used. If you ever altering this file before, rename as msg.ini and move it to gp4tweak_data folder.
qualrule.ini -> If you ever altering this file before, move it to gp4tweak_data folder.
For easy migration from beta 2 to beta 3, follow uninstall section in beta 2 readme and installation section in beta 3 readme. I also recommend to download
config_template.zip and extract it to your GP4 directory (be sure to specify "extract with full path" feature in your zip archiver).
About the last question, that was normal (about 1-4 seconds) when you see a small delays after GP4 exit and return control to GP4 Tweaker. This is necessary to ensure all resources used by GP4 has freed.
In reality, doesn't matter who's
right but most important is who's
left.