There is no such thing as a 64-bit TWAIN plugin. It's still around in the 32-bit version AFAIK.
But there is absolutely no advantage to scanning from within Photoshop. Do it from the Epson software - it's the same scanner driver in either case - and set it to save as TIFF anywhere you like. Then you can get some work done in the meantime, instead of just staring at a green progress bar.
The "basic UI" you see is probably WIA (Windows Image Acquisition or something). No reason to bother with that.
These are compatibility issues in the scanner driver software and I hate to say it, neither Canon nor Epson have ever been good at that. Their drivers are just plain atrocious. It only works in your PSE 7, because it is just as old as the scanner driver and may support some old feature that newer versions don't. Short version: buy a new scanner which has guaranteed compatibility with CS5. Everything else won't work.
I normally import in to PS using Epson scan and work with the images direct and did before with CS5. But since I've been on the new PC if i click file/import the scanners (Epson 10000xl & V750) dont appear in the menu as they did before. If I click WIA I get a very basic UI. I cant understand why it worked before with CS5 but not now, same version of PS and same drivers on the scanners?
Buy a new scanner... at $$$ becuz the jerks at Epson/Canon are too lazy to do the job!
Instead, install an earlier OS like XP as a dual boot and scan away.
That shouldn't be necessary, as long as a 64 bit driver is available from Epson.
I actually had to do that for my new pc - not b/c of software, no pci slot. Know how much a pcie scsi card costs? A new scanner was cheaper...
That's the whole point.
It ain't. If it was, I'd be using it.
How is it that I was able to scan into Photoshop without any problems up until this alleged upgrade to CS5? After 2 1/2 hours of screwing around with it, I loaded a much older copy of CS and VOILA I have my image.
While this is not on a par with the CS4(?) "Oh, by the way your existing plug-in library is now worthless" is it a royal PITA.
I mean, I can't scan in Photoshop? Am I asking for the moon, here?
OS X 10.6.8 -- I can use Image Capture (Mac utility) or spring for a new copy of VueScan. Or (what I did) was fall back to Photoshop CS and scan in that, then open the PSD in CS5. Irritated that something I was used to doing is not available any longer in the Pshop app.
You're in the Windows forum, so that's a little confusing.
Photoshop CS5 is compatible with all the same plugins and scanner drivers as CS4 was. You still have to download and install the optional TWAIN plugin (becuase too many TWAIN scanners still cause crashes).
But Photoshop CS5 can also run in 64 bit addressing on MacOS, where Photoshop CS4 could not.
And plugins have to be updated to work in 64 bit addressing -- 64 bit applications cannot access 32 bit plugins or vice-versa.
Photoshop CS5 runnings in 64 bit addressing can only load 64 bit plugins, and 64 bit compatible scanner drivers.
To load older 32 bit plugins and scanner drivers, you have to tell Photoshop to launch in 32 bit addressing mode (Get Info on the application to switch).
And, of course, all of this was spelled out in the README and documentation that came with Photoshop CS5.
Right, right, right... I set Pshop to 32-bit, downloaded the TWAIN driver, et cetera... to no avail. The problem appears to be identical on Mac and PC sides. Grrr. Thanks though.
I still don't see the problem. Open the Epson software, make your adjustments, and go.
And you can use Photoshop while the scan progresses.
What I was used to doing was being able to use the "Import" menu to scan inside of Photoshop. Ah, me, changes, changes, changes...
The problem appears to be identical on Mac and PC sides. Grrr. Thanks though.
PC people are able to scan through the optional Twain_32.8ba plug-in - which a user MUST download and install separately from the Photoshop installation.
You should be able to do that too, if you put the right things in the right places. Chris has said as much, above. But others are taking things one step further and advising against it, since using TWAIN from within Photoshop can result in problems.