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TWAIN_32 as your source. If your using Windows NT 4.0, you may need to upgrade your software to Photoshop 4.0. Earlier versions of Photoshop do not support Windows NT 4.0. Or you may need to upgrade your computer if it is slower than 100 MHz or if you have less than 32MB of RAM.
The driver for the PhotoPC 550 camera is provided in the Sierra Image Expert software that came with the PhotoPC 550. The software should have come with the camera. If it did not, the camera should be returned to the store and exchanged. There is no Twain driver download available for this camera. The reason we do not have it posted for download on our website is because the driver was written by Sierra software and due to limitations of the copyright laws, EPSON cannot give away their software.
If your system has less than 16MB RAM, the transfer speed may be slow. For Windows 3.1 and 3.11 try using virtual memory. Also check the port settings in your Windows Control panel. You may need to set your port to a faster speed.
ake sure the lens cover is open all the way and the storage card slot is closed. If your using a SmartMedia card verify that the cards specification is 3.3V SSFDC and not 5.0V. Check the batteries and verify they are installed correctly. When using the AC adapter, make sure it is plugged into a working outlet.
The camera is operating correctly. The total number of pictures you can store depends on your pictures' content and messages' length. So the number doesn't always change, especially when you're using standard image quality.
The camera may be full. Check the picture counter on the display panel. If the camera displays "00" the camera is full, erase some pictures or transfer the pictures to your computer and then erase them. Another option would be to install a SmartMedia card to store more pictures. Also, when the camera is connected to your computer you can't use any of the controls on the camera itself. See Chapter 7 of the user's guide for instructions on taking pictures from you computer.