I have a fairly simple ACE Calculation I've been working on. The logic is set up to make a connection to a SQL database which is then applied to a DataSet. I loop through the rows of the desired table within the DataSet. I then have a Select Case that matches specific rows from my SQL query to the appropriate PI TAG, and then sets the Timestamp and Value for each tag. At one point the calcs were working as expected and populating values when I had a hardcoded connection string for my SQL connection in the AceCalculation sub.
I recently made one minor change to the logic which initializes an XML document object to traverse the associated config file (System.Configuration did not work to read the app.config). I'm able to read the config file and get an encrypted connection string. I then have a custom function to decrypt the encrypted connection string. When running through debug this all appears to works fine. I've been unable to get anything now but Calc Failed.