all my CS 4 Master Collection programs say they are not compatible with CC I have win 8.1 dell notebook 8 megs of ram,
I will upgrade ram next month, and os as well if needed.

in creative cloud mode master collection cs3 keeps saying itis in trial mode 29 days left

I spent 5 hours loading up my master collections yesterday, only to fail on the last disk #4
What a nightmare then it failed on the last disk 4 of cs4, Master Collection I think it had to do with acrobat 9 pros, because acrobat 9 pro updated to Acrobat DC it was the only app that would install.
All the rest say not compatible. and will not install.
So I installed my C Master Collection CS3 Serial Number,
And 4 disk complete which installed with failures from Master Collection CS4