EFW installation problem - COM Class CLSID error

buckeyestargazer

Yesterday I decided to update my camera and EFW drivers to the newest versions (ASI6200MM and EFW). Big mistake. It broke both camera and EFW functionality.

First, with the most recent drivers (Camera 3.20 and ASCOM 6.5.12) the camera cooler would not work. The power was on, the LED was lit, and the power indicator in SGP was also on, but the temperature read "N/A" and the buttons to control the cooler were grayed out and unavailable. Reverting to an older version of the ASCOM driver fixed this problem.

Second and the much bigger issue, I cannot properly connect the EFW anymore, no matter what version of drivers I use. I have tried the most recent drivers and various older drivers and I always get the same fatal error when trying to connect (see attached).

A friend has told me this is probably an issue with bit-ness, 64bit vs 32bit discrepancy.

How do I fix this?

Software@ZWO

buckeyestargazer Hi, please check the your OS bit. If your OS is 64-bit, please use the x64 ASCOM.
https://dl.zwoastro.com/software?app=ASCOMDrive&platform=windows64&region=Overseas

If your OS is 32-bit, please use the x86 ASCOM.
https://dl.zwoastro.com/software?app=ASCOMDrive&platform=windows86&region=Overseas

buckeyestargazer

Thanks for the reply. I have previously double checked that my system is using all 64bit drivers but nothing has worked to fix the problem. I have tried many times to uninstall and reinstall drivers and I've tried both the newest drivers and older drivers without success.

After trying many things I ended up completely re-installing Windows and reinstalling all the software and that fixed the problem.

buckeyestargazer

I am now convinced that there are problems with these drivers (Native 3.20 and ASCOM 6.5.12).

I maintain two NUC miniPCs (prime and backup). Yesterday I reinstalled windows on the Prime NUC and installed old ZWO drivers (native 3.16, ASCOM 6.5.1.5). Everything worked perfect after doing this.

Today I reinstalled windows on my Backup NUC and installed everything the same EXCEPT I installed the latest ZWO drivers as an experiment and the exact same problems now occurred on my backup NUC again.

To recap:
With the most recent ZWO drivers (3.2, 6.5.12) the camera would not cool properly. The camera was powered on properly but the controls to cool were grayed out in SGP and unavailable. Rolling back the ASCOM driver fixed this problem, but now the filter wheel threw the exact same error as shown in the first post in this thread.

Software@ZWO

buckeyestargazer I released a new version for the possible problems. Please install this version and see if it can solve the problem. Thank you.
https://drive.google.com/file/d/1_f46xBLFLaijaHUpfSm8l4Nh1xRb7v0l/view?usp=share_link

buckeyestargazer

@Software@ZWO#60581

YES! ASCOM 6.5.13 works well. The camera cooler works properly and I no longer get the 64bit vs 32bit error with the filter wheel.

THANK YOU!

Software@ZWO

buckeyestargazer Thank you for your feedback. We will release the new version soon.