Failed to access print paramaters

[russ.green]

Any ideas why I might not be able to access print parameters?  This line of code is in my Execute method

Dim pMgr As PrintManager = commandData.Application.ActiveUIDocument.Document.PrintManager

[Aaron.Lu]

Dear Russ, I could not reproduce your probolem.
this may happen when your Revit API objects are invalid, meaning lossing the pointer which points to native object of Revit,
to solve this, you should not use preserved objects e.g. fields in class which refer to Revit Document object, but rather, you'd better to re-obtain the object from Revit Application object.

Hope it helps.

[russ.green]

My project will open and can be debugged from with VS 2012.  When I tried begbugging the project from within VS 2013 Community it throws a an exception at that line of code.

I'll try again later and take a closer look at your suggestion.

[Anonymous · Accepted solution]

I once ran into an issue where if the Windows Print Spooler service was not started or was not working properly, trying to access the Document.PrintManager property would cause an exception to be thrown.

This appears to be the same exception that you are running into - it was of type Autodesk.Revit.Exceptions.InvalidOperationException with the text "Failed to access print parameters."

Take a look and make sure that the service is started and is running correctly.

PS: This exception isn't documented in the API docs. If someone from Autodesk sees this, could they create a wishlist item for it to be added?

[Aaron.Lu]

Thanks for reporting this, I will log it.

[russ.green]

I've rebooted my machine so can't know if this was the issue but its not happening today and print spooler is running so it could have been.

I'll keep an eye out for it.

Thanks