Reply To: Weird interaction between TWAIN and WIA DSs for same scanner

[sparge]

Hi Gabe,

Are you using your Epson scanners with Admin rights, or User rights? That’s an important distinction – the problem only occurs for Users. And are you repeatedly opening and closing the DS in a single TWAIN session? I bet you aren’t, but that’s what’s doing the damage. Don’t ask me why I have to do this, please – just take it as read!

I wrote the app, but I use EZTWAIN to do all the TWAIN stuff – so I can’t log below the level of the calls that I make to EZTWAIN, and it’s an EZTWAIN call that fails. EZTWAIN has its own log, but it sheds no light either.

Just as I expected, Microsoft and Epson are currently involved in mutual finger-pointing. Me, I’m equivocal – there is evidence that could point either way, or indeed both ways. I just want the problem to be sorted.

Andy