Hi, Arthur. Which operating system are you using? If it is on Windows 10, you can try the following steps: 1. Open File Explorer and select the .py file 2. Right-click on the file and choose "Open With" > "Choose another app" 3. If UCSF Chimera does not show up as one of the options, click on "More apps" 3a. Scroll to the bottom and click "Look for another app on thie PC". 3b. Navigate to where Chimera is installed and select "chimera.exe" in the "bin" folder under the main install folder. 4. Select UCSF Chimera as the application for .py files 5. Select "Always use this app to open .py files" (this step sets the default) 6. Click Okay. That should set the default .py opener to Chimera so that you can double-click on .py files next time and not have to go through all this each time. Hope that helps. Conrad On 8/22/2016 4:25 PM, A G Szabo wrote:

I recently downloaded the new version of Chimera. No issues with that so far.

However, when I save a session it is still saved asa Chimera file,or a PYC file on my desktop.

So when I went to my desktop file list, and tried to open one of the files I would click on“open with…” Two programs would be listed, Adobe, and Chimera. So I would select Chimera and the file would open satisfactorily.

However, with the new version of Chimera, if I repeat the above, the only program that is listed is adobe. If the file type is listed as Chimera, then adobe would be listed, and there would be other programslisted but not Chimera.I can open the file in a round about way, but the former way was more efficient and user friendly.

If I go to my programs list, there doesn’t seem to be a way that I can conveniently open the file without first opening up Chimera.

Your comments will be appreciated.

Arthur G. Szabo

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