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I'm having problems using my Epson scanner/All-In-One in Mac OS X. I've installed two versions of Epson Scan software. Could this be the problem?


  • Mac OS X
  • EPSON Scan
  • All Epson Scanners, All-In-One and Laser Multifunction products


Versions 2.xx and 3.xx of EPSON Scan cannot run simultaneousely on the same Mac OS X system. This limitation means that between these two versions, only one version of EPSON Scan can be installed at any one time.

The following two versions EPSON Scan cannot co-exist in the same Macintosh environment:

  • Universal Binary version (UB version)
  • Rosetta/PowerPC version (PPC version)

If these two versions are both installed in the same Macintosh environment, EPSON Scan may not work correctly. You can connect two Epson scanners to your Intel-based Macintosh computer if both scanner drivers are of the same type (both Universal Binary or both PowerPC based Rosetta).

If you are experiencing problems using EPSON Scan when two versions have been installed, please refer to the next section to check if you are running the Universal Binary version or PowerPC version.


How do I know if the driver is a UB version or PPC version of EPSON Scan?

Universal Binary version (UB version)

Universal Binary version runs from Mac OS X version 10.4.4 and is designed for both PowerPC- and Intel-based Macintosh systems.

PowerPC/Rosetta version (PPC version)

Rosetta dynamically translates most of your PowerPC-based applications to work with your Intel-based Mac.

EPSON Scan limitation

Macintosh environment: PowerPC Intel
OS version: 10.2.x - 10.2.7 10.2.8 - 10.5.x 10.4.4 - 10.5.x
Recommended EPSON Scan version: PowerPC/Rosetta version Universal Binary version
PowerPC/Rosetta version*
Universal Binary version
PowerPC/Rosetta version*

*These two versions cannot coexist in the same Macintosh environment.

Version 2.9 or later is a Universal Binary version, but for wider-compatibility, the v.2.9x and 3.0x installer may also include the PPC version. This allows the same file to be installed on both PowerPC and Intel-based Macs. Version 2.9x and v. 3.0x cannot be clearly distinguished.

Epson Scan version no: ~2.8x 2.9x - 3.0x 3.1x
Epson Scan type: PowerPC/Rosetta version Universal Binary
PowerPC/Rosetta version
Universal Binary version


In order to resolve this issue, we recommend updating the versions of Epson Scan you require on your system.

  1. You will need to uninstall any version of Epson Scan that is currently installed. For instructions, see the following Related Article (a link is also available in the Related Articles section located at the top-right of this article):

    How to fully remove an Epson scanner from Mac OS X

  2. Once you have uninstalled the driver, download the latest UB version driver from the Epson website. Open the Support section and select your product. Select your operating system if required and locate EPSON Scan in the Drivers and Software section. Check the release date and version number displayed for EPSON Scan and select the most recent version to download.


    You will need to download EPSON Scan separately for each product that requires it if you have more than one Epson product capable of scanning (e.g. a scanner and an Stylus All-In-One inkjet or multifunction laser such as the AcuLaser CX11 or CX21 series).

  3. Once you have downloaded EPSON Scan, double-click on the EPSON file on the desktop and follow the on-screen instructions to install the driver. If you have more than one product, install the version of Epson Scan you downloaded from its Support webpage.

  4. Once installed, restart the Mac. Once restarted, attempt to scan again.

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