I am using a Mac Mini M2Pro and use WSJT with my K4D.  When you install WSJT-X, 
there is a readme file with specific instructions on increasing the default 
swap file size. One has to do this using terminal (in the utilities application 
folder). Have you completed this step?

73 Howard WX7HS 

> On Jul 26, 2023, at 16:50, Richard Gilley <[email protected]> wrote:
> 
> Hi all,
> 
> I loaded WSJTX on a IMAC and ran into this issue on my K3:  I have receive 
> and Tx ok but I also have  ERR PTT displayed.  Pressing any key does not 
> clear this error and I have no access to power adjust as an example.  CAT 
> does go green but still the error.
> I have gone over my WSJTX settings and settings on the K3 as listed in the 
> manual, and I think I have the audio set correctly in the MAC.
> 
> I can run WSJTX on a PC with the K3 without any issue.
> 
> I have a feeling that not many folks use Mac but it is what I would prefer to 
> use.
> 
> Thank you all for reading about my problem and that there is solution.
> 
> Best regards
> R Gilley
> AD1G
> 
> 
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