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1. Re: Going from CS5 32bit to CS5 64 bit
markerline Feb 2, 2011 2:17 AM (in response to Contemporary_Dave)I'm not sure about the download installer, whether it includes the 64-bit version. But if you were on a 32 bit OS, the 64-bit version would definitely not have been installed onto that system. If you are on a 64-bit system you have the option of installing both versions. Only the 32-bit version supports TWAIN drivers for scanning. As per your other question(s) I'm not sure, someone else will have to respond.
P.S. I'm speaking from the standpoint of the DVD installer.
Message was edited by: markerline
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2. Re: Going from CS5 32bit to CS5 64 bit
Noel Carboni Feb 2, 2011 8:20 AM (in response to Contemporary_Dave)The download software from Photoshop will install both 32 bit and 64 bit software on a 64 bit Windows system.
Keep in mind that plug-ins built for 32 bit Photoshop will not work in 64 bit Photoshop and vice versa.
However, many plug-in makers now provide an installer that will deliver either or both 32 and 64 bit builds, depending on which Photoshop versions you have installed. You'll need to check with the plug-in makers (e.g., Nik) specifically to determine whether they support the 64 bit Photoshop.
A general rule of thumb is that if you didn't get the plug-in in the last few years, chances are it's 32 bit only (but the maker may have updates or a new version available).
-Noel


