A funny.
We've a few service-style programs that react to the presence of text or XML files dropped into a folder.
The latest of these includes two winreport2 type .rv packages that both work just fine when in their own standalone parent programs but the first one of these executed always coughs up a 'An error was encountered. Do you wish to cancel this report' yes/no box.

tracing it it seems to happen if IsViewerActive says there's no viewer, and why would there be? The report is PRINT_TO_PRINTER_NO_DIALOG and hasn't even gotten going at this stage. There is definitely no preview window.

Answering No lets us continue, but as I said this is a service and I ain't paying someone to sit here 24/7 hitting 'No'...

Any thoughts?