IRfanview does not reconize my Epson V750 Twain Scanner

[Ohjai]

I have a W7 Pro, 64 bit computer. My Epson V750 Pro scanner is working with VueScan.

In IRfanview when I select File-Select scan/Twain source the options are blank.

The scanner is working with other programs.

Do y9ou have any suggestions?

Thanks

Jim