Here's my sterder thing.

set_regedit_key : failed to open .rpl (5)
set_regedit_key : failed to open Toribash.Replay (5)
set_regedit_key : failed to open Toribash.Replay\DefaultIcon (5)
set_regedit_key : failed to open Toribash.Replay\Shell\open\command (5)

Help?

No need to specify 3.9 wont start if you mean none of them will start. ~ Vox

I may not know the permanent solution but I suggest using another version such as 3.8 or 3.86 for now till someone is able to fix the problem.

The problem is that none of the versions will start;_;

Try using something like CCleaner to patch up your registry, uninstall toribash and try again from there.

Note: make sure to run multiply Reg error checks, not all are found on the first scan, and scan before and after uninstalling.

Tried both and still no solution

SkulFuk said it might be related to user permission and the UAC on windows 7/vista, you should check permissions on those files, also what OS are you using?

Home edition windows 7

Edit: Sudenly Started working.