When calculating any model, the following message is generated:
Calculation Error: Access to path C:/temp/bentley/"program name"/xxxx is denied
This can occur if there is an issue with a file in the temp folder. Note that the path to the temp folder may be different on different machines. Close the program and browse to the temp folder. Delete the items in the folder. Reopen the program and compute the model. The error message should no longer occur.
Browse to where you files are located and delete all the output files except those necessary to run the model. The necessary files for the OpenFlows hydraulic programs can be found in this wiki.
For example, if the file path was "D:\<folder1>\<folder2>\folder<3>\folder<4>\" try saving it to "D:\<folder1>\<folder2>\"
Take the files associated with the program and move them to a location on the C: drive