Hi StevenE,

Thanks for reaching out. Did you ever find an answer for this issue? 

This article shares that MyAssistant 20.3.5 ** Build date 6/10/2021 (20.3.5.0 in Programs and Features), is only compatible with Sage 300 CRE versions 20.3, 20.4 and or 20.5 so you will be needing a new version of MyAssistant before you can upgrade to version 22..

If you are still looking for guidance, please let us know and we can try to point you in the right direction or suggest some resources or next steps.

Warm Regards,

Erzsi

StevenE

Please see this post announcing the compatible version of MyAssistant: 

https://www.sagecity.com/us/sage_construction_and_real_estate/f/sage-cre-announcements/194148/sage-300-cre-myassistant-for-sage-300-cre-version-22-2-is-now-available