I want to share this in case anyone else comes across this problem.
You may receive the above mentioned errors -307882 and -307654, in VeriStand 2014 and 2015 repsectively, when attempting to open the Channel Calibration window if your System Definition File does not include a DAQ Task. Additionally, only channels included in the Task will be displayed in the Channel Calibration window.
As a note, I'm running English language versions of VeriStand on a German language Windows 7 OS.
I am having this exact issue. We are running VeriStand 2014 and i am receiving Error -307882 when i try to open the Channel Calibration window in the System Definition File. I attempted to add a DAQ Task (at least i think that is what i added) and it did not seem to help. Would someone be willing to explain in greater detail what needs to be done?