Signals ChemDraw: "This file does not have an app associated with it for performing this action" error after entering your Signals credentials to launch the software

This issue occurs if you had an older version of ChemDraw installed on a different folder (like your roaming profile folder) and now ChemDraw is installed under C:\Program Files or any other folder.

Details:

Option 1:

1. Look for the location of your ChemDraw.exe file.  By default it should be listed under C:\Program Files\RevvitySignalsSoftware\ChemDrawApplications_x64\ChemDraw.exe
2. Click Search on your task bar and type "Regedit".  When the Registry editor appears, right-click on it and select "Run as Administrator" (Or More > Run as Administrator).
3. Open \HKEY_CLASSES_ROOT\com.revvity.chemdraw\Shell\Open\Command
4. Double-click the (Default) key and replace the existing path with the one in step one.  Leave the "%1" at the end and click OK.

5.   Close the Registry Editor and start ChemDraw again.

Option 2:

1. Uninstall ChemDraw and ChemDraw Applications using the Programs and Features option in your Control Panel.

2. Click Start and enter "Regedit".  When the Registry editor appears, right-click on it and select "Run as Administrator (Or More > Run as Administrator).

3. Open Computer\HKEY_CLASSES_ROOT\com.revvity.chemdraw

4. Right-Click the "com.revvity.chemdraw" folder and delete it.

5. Reinstall ChemDraw and test again.