First, I want to say that nearly all problems belong to SE. I've only repacked cabs and patched.
Second, I've installed nearly all cabs to my own HTC/SE X1-based WM6.5 ROM. And I haven't got any problems with them.
Third, if you can't install something (that's possible on some ROMs...), leave everything for chiefs.
How to install DRM client manually? Copy all files to \Windows\, apply *.reg file using Resco Registry Plugin or any registry editor. DRM client is MUST-HAVE. If you haven't installed it, SlideView won't work.
Then... There are no new drivers because I've unpacked only cabs.
Next... If SlideView is correctly installed, after Soft-Reset you will get links to it in start menu automatically.
There is a very good Debugger to see missed DLLs or debug_printf calls. Finding it now...
P.S. I forgot to say that SDKCerts are needed as a lot of programs are patched and resigned.