Give us the particulars on that LapTop at least manufacturer and full model number.
When you install, are you installing to a clean (no malware), defragged hard drive with your ANTI-VIRUS OFF How much free space do you have on your computer?
I am having this exact problem - after installing, the individual programs seem to run ok but Roxio Central reports the error seen above. Clicking a link in the error dialog reveals this:
"Error Signature:
EventType : clr20r3 P1 : roxiocentralfx.exe P2 : 4.12.0.0
P3 : 48a05348 P4 : roxiocentralfx P5 : 0.0.0.0 P6 : 48a05348
P7 : 17e P8 : 12 P9 : system.dllnotfoundexception "
I reported this to Support, and they had me run RCPROD.msi from the DVD /RoxioCentral_4x folder. Doing this achieved nothing.
I have now followed the Clean Install procedure to the letter, uninstalling, deleting folders, clearing the registry, and have ended up with exactly the same problem.
To date I have spent in excess of 8 hours trying to install this suite, and still have little to show for it.
My system is a Del Inspiron 8500 laptop, with XP Home SP3 and all current updates.