I am experiencing the reported problem where Lightroom CC 2015 crashes immediately on start up displaying the splash screen for a fraction of a second. I have tried signing out of and back in to Creative Cloud as recommended but the fault persists. One this should not be happening with an Adobe product and secondly a better fix is required.
I'm having the exact same issue and agree wholeheartedly. I'm in a queue to support so will let you know if I find a solution
Support fixed the issue for me.
He looked into the Windows Event viewer and found the faulting path
Faulting module path: C:\Windows\SYSTEM32\ig7icd64.dll
and renamed it ig7icd64old.dll
On restarting Lightroom he turned off the use graphic enhancement option in preferences.
Not seen this solution anywhere in the forums so I asked him to post it but not sure if he will.
Hope it helps.