Knowledge Base

Article ID: 493 | Category: Scanning | Type: Hot Fix | Last Modified: 10/15/2013

The parameter is incorrect / Cannot open TWAIN source

Description

One of the following error message appears during scanning: "Cannot open TWAIN source" or "The parameter is incorrect."

Solution

Follow the instructions below to fix this problem:

  1. Start ABBYY FineReader.
  2. Open the File menu and select the Select scanner item.
  3. The Driver drop-down list should contain several scanner drivers. Try scanning an image using each one of them. Finding a scanner driver that successfully produces a scanned image without causing an error solves the problem. 

If all of the scanner drivers produce errors, use the TWAIN_32 Twacker application to check if your scanner's drivers are working properly.

  1. Exit ABBYY FineReader.
  2. Download Twack_32.zip.
  3. Unpack the archive you've just downloaded and install the Twacker application by double-clicking Twack_32.exe.
  4. Open the File menu in TWAIN_32 Twacker and select the Acquire item.
  5. Click the Scan button in the dialog that appears.
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