I need some help please

[KING111]

I installed SH3 and GWX 2.0
then I copied the date file from the
u-Boat 1.2 for GWX 2.0 straight in to the
SH3 directory overwriting the date file inside
SH3 and it all worked no problems at all so I was running
SH3-GWX 2.1 and u.Boat 1.2 all together
But then a uninstalled SH3 and deleted the saved games
And reinstalled everything the way I did before and it did
Not work so I uninstalled everything again and reinstalled
It this time I used JSGME to install u-Boat 1.2 for GWX 2.0
Rather than have to uninstall everything again but it still will
Not work so I uninstalled everything again and installed it
The way I did the first time when it was working and no luck
I just can not get SH3-GWX 2.1 and U-Boat 1.2
To work together anyone got any ideas HELP