I seem to have read somewhere that uninstalling the FSX Demo might cause problems with FS2004. I have searched different forums, but can't find it again, so do you know if this is correct (I hope not) and if yes, then why?Falcon

Hi Falcon,Yes, I too felt a bit wary when the time came to uninstall the demo (I had the first version installed). In the end I just crossed my fingers and went for it. Luckily the uninstall proceeded cleanly and no problems were encountered. FS9 remains fine :)Mike

I had no issue. Set a restore point in XP before un-installing though, just in case. Seems to be a forgotten feature in XP ;)

I had a problem, when I uninstalled the demo it hosed the registry entry for fs9. I just used the registry fix from flight1 and it all came back in a matter of seconds.Aaron

No problem here. I went in and saved the registry for FS9 and FSX on the side just in case. But not needed. I went from 1st small demo, to full demo, to retail.

Also went from both demos to retail with no apparent problems.

Found this thread when doing a search and thought I'd mention that I too, thought I was OK after going from the FSX Demo to FSX Deluxe with FS9 on my system also.BUT....it seems that after uninstalling the FSX Demo, which I did after having FSX installed so I could transfer settings and such easily, the Registry entries for BOTH my FS9 and FSX are incomplete or missing. The only registry settings left for FS9 are those which were placed there by Active Camera. The rest of them, which I am familiar with from referencing in install programs I've made, are just GONE.Also, the FSX registry entry that I am sure should be there but is not (SetupPath) is also gone, there is no "10.0" section at all under the "Flightsim" key.Curiously, the SDK registry entries are there, but I installed these after uninstalling the Demo....and the demo may not be aware of them anyway so probably they're not risk items.I did restore my FS9 EXE Path in the registry via the tool at flight1.com (Thanks for the info!).Not sure how to restore FSX entries, I haven't had activation problems and would hate to burn my second install/activation over this. Would any of you have input or ideas as to whether running the "Repair" option from Disc 1 woudl do it, or is there another tool like the highly useful flight1 tool?Thanks in advance fer yer input.... :)

Aha! I stand corrected....SEMI corrected...FSX allows the app to be installed "For All Users" originally, and if this default is left alone upon install, the FSX registry values are actually written to HKEY_CURRENT_USER and not HKEY_LOCAL_MACHINE as we are used to.(so I was wrong)HOWEVER - this poses a dilemma for future addon installers that will be looking for the setup path in HKEY_LOCAL_MACHINE.(so it's still a bit of a problem lurking down the road some rainy night after downloading something cool)FIX: Free tool at http://tweakfs.com - look under "Free Downloads" section on the left for the FSX Registry Utility. "fsx_reg_utility.zip". Just tried it and it will search either registry location, show you what (if any) value is there, and ALSO allow you to set the path up in HKEY_LOCAL_MACHINE just to be on the safe side. Not a bad tool!