I've tried this on two difference machines (both Windows) with both a regular installation and portable.
If I check the keyboard shortcut for ReaConsole and it says 'C' but that doesn't work. If I remove that and re-set it to 'C' it works fine.
Before fixing it once I tried assigning 'C' to another random command and it didn't warn me about the shortcut already being used.
I've tried this on two difference machines (both Windows) with both a regular installation and portable.
If I check the keyboard shortcut for ReaConsole and it says 'C' but that doesn't work. If I remove that and re-set it to 'C' it works fine.
Before fixing it once I tried assigning 'C' to another random command and it didn't warn me about the shortcut already being used.