GUICtrlOnHover and WM_COMMAND

Hello, excuse my english I'll do my best

I used the UDF GUICtrlOnHover v2.1 and I loved it, so I wanted to use it again with another software, but I had a problem, the "PrimaryDown_Proc" is not working until I delete GUIRegisterMsg($WM_COMMAND, "WM_COMMAND").

The most strange in all this, that I have the same function "WM_COMMAND" in the first software and it works right.

I know that the author of this UDF said that this issues is fixed but obviously, not.

Someone who had the same problem can tell me if this can be resolved ?

Thanks.

(lot of thanks to the author of this UDF)