Can not get camedia master 4.2 to work in windows 7.

try going to the camera manufacturer web site , find the download for your model and select the win 7 os
down load and run from the web page
win cp and win 7 are no longer supported by Microsoft so there is every possibility that the driver on the win 7 os is not operating

I would suggest you try the Olympus Viewer 2 software,
it's fully compatible with Windows 7.

Camedia Master 4.+ is up & running ... the best it ever has on my new win8.1-64 computer. The only trick is to find the buried albums & replace them in the right spot.

1. Your camera may not be compatible with the Windows 7 environment.
You will have to either check to see if the camera will run under another Operating system environment such as Windows XP or Vista. Windows will allow this if the camera is backwards compatible that is if the drivers are available in the Windows DLL list or driver list. If not, this camera will not operate in this this Operating system environment.

To learn about the new and free version of Olympus Master 2 software go to:
For Windows:
http://downloads.olympus-europa.com/OM2/win/OM211Setup.exe
For MAC:
Olympus Master 2.11: http://downloads.olympus-europa.com/OM2/Mac/OM211EN.dmg
This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x.

To learn about the new and free version of Olympus Master 2 software go to:
For Windows:
http://downloads.olympus-europa.com/OM2/win/OM211Setup.exe
For MAC:
Olympus Master 2.11: http://downloads.olympus-europa.com/OM2/Mac/OM211EN.dmg
This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x.

To learn about the new and free version of Olympus Master 2 software go to:
For Windows:
http://downloads.olympus-europa.com/OM2/win/OM211Setup.exe
For MAC:
Olympus Master 2.11: http://downloads.olympus-europa.com/OM2/Mac/OM211EN.dmg
This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x.

To learn about the new and free version of Olympus Master 2 software go to:
For Windows:
http://downloads.olympus-europa.com/OM2/win/OM211Setup.exe
For MAC:
Olympus Master 2.11: http://downloads.olympus-europa.com/OM2/Mac/OM211EN.dmg
This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x.
(http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version).
It is a free download so no serial number is required.

To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x and is Vista compatible.

Windows compatibility with Olympus digital products is supplied below by model. This information will be updated as additional testing is
completed.
Windows Compatibility For Camedia Master Software Versions
Software Version Remarks
Camedia Master 4.3 Windows 98, 98SE, 2000, ME, and XP are fully supported with Camedia Master 4.3
Camedia Master 4.2 Windows 98, 98SE, 2000, ME, and XP are fully supported with Camedia Master 4.2
Camedia Master 4.1 Windows 98, 2000, ME, and XP are fully supported with Camedia Master 4.1
Camedia Master 4.0 Windows 98, 2000, ME, and XP are fully supported with Camedia Master 4.0.
Camedia Master 2.5
In order to use the drag and drop functionality in Windows XP you will need to download and install the Camedia Master 2.51 patch
for Windows XP compatibility located at http://www.olympusamerica.com/files/cm251_update.exe This patch will not work on any
other operating system.
Camedia Master 2.0
While you can download images using Camedia Master 2.0, you may experience incompatibilities when using the drag and drop
feature in Windows 98, 2000, ME, and XP.
Digital Vision 3.0 The Digital Vision 3.0 software is functio nal but not officially supported with Windows 98, 2000, ME, and XP.

Also, here is a link for the Camedia Master software updates
It is for Camedia Master 2.x or 4.x
Also, on the page you can download the new Olympus Master 2.0 software.

http://www.olympusamerica.com/cpg_section/cpg_downloads.asp?special=11

Hope this was helpful.
Please rate this advice. Thanks so much!