Gilman Shattuck writes: "After installing OS 8 I can no longer 'TWAIN Acquire' from Photoshop. I can get into TWAIN but the system locks up with a partial screen and a pulsating cursor. It then requires a hard reset to restart." Adobe tech support told him that Epson is coming out with new driver that would fix this.
Greg Miller echoed the same problem: "Upon upgrading to OS 8 on a 7100/66, TWAIN Acquire does not function in Photoshop 4.01. I am using an Epson Expression 636 scanner and the function worked properly before the upgrade. Epson technical support confirmed the bug. In the meantime, the Epson Scan II utility software does function properly."