Problem printing crystal reports

I am developing new reports using CR 11. The reports are part of an ERP system. After a report deployment to production environment users can access them by using ERP's interface. I am using dev. pc for designing the reports and my default printer is e.g. \DEV\PRN1.
Last couple of weeks users have a problem when trying to print some of the reports. When they click print the default printer is the development printer \DEV\PRN1 not the client's. This is not the case for all users just some of them.
Does anyone know what is causing CR not to pick up the right(default) printer.
The same users can print other reports with no problems. Their Windows settings seems to be ok.

The application does not have functionality to allow users to choose printer from the list prior to printing - just to choose number of pages to be printed.

Also, I noticed that the same problem is with landscape oriented reports as well as regular A4.

So far I came up with a workaround: - after development a report set Printer settings (No Printer), save and deploy. Then when a user wants to print the report, print option is grayed out, clicks printer settings, un-check no printer, then hit print button and then CR picks up the right printer(user's default printer).
All printers are network printers.

If someone has an idea how to solve the problem please respond.
Thank you

Does anyone have an idea how to solve the problem or to give me guidelines.
Thanks

1. Install Dummy printer driver (e.g. I installed Microsoft XPS Document Writer and name it DummyCRPrinter)

2. Open the "weird report" change something insignificant, go to FILE/Print/. choose Dummy printer.. press Apply, Cancel and Save

3. Copy the rpt to prod. srv, run the report from an user site, press Print

The report is picking up the right( users default) printer.Basically it can't find the Dummy printer and then search for default one)

Still, I could not figure out why it is happening with only a few of the reports that I have developed. I tried different fonts (TTF), margins, printers, landscape orientations, multiple columns ..) but I could not find any pattern.

Many thanks to EdC