Prostructures connect edition (connect for autocad)

I am installing Prostructures for autocad ce 2019 ( version 10.00.00) the installs works fine, the Prosteel module loads and the menu's are fine. however if the prostructures package is installed and an earlier version of the connection client is installed, i then need to update to a later version of the connection client (ie vxx.xx.xx.22 for bentley lisencing requirements.) the prosteel.arx file suddenly will not load for prosteel menu functionality.

so all the menu's are there with no ".arx" behind it to function.

the file paths are pointing to the local drive "prg"folder

Appload can see the file required in the right location however i get "unable to load prosteel.arx"..no amount of trying, yelling, swearing at it can coax it out of the hole.

Has any one had any issues similar?