Hi Susan,
While the output might be the same in your case, the forms printing process is completely different when you choose to use the customer statements. In that case, for each customer, the form name is inspected and the form loaded if it exists. If it doesn't exist, then the one in the company profile is used. The printer is then opened to find out what it is capable of (paper size, colour etc). The form is converted into a series of printer commands, the printer is closed and the memory used by the form is discarded. This process is repreated for each customer.
When you use a specific form for the entire run, Adagio Receivables can load that form, open the printer once, send all the statements to the printer in one job, and then close the printer and discard the computer memory it was using.
If either Receivables or the printer driver does not properly free the memory it was using to print the form, eventually your computer will run out of memory to use or reference some memory improperly. This will likely generate the error you saw.
We'll take a quick look to see if it is a Receivables problem. The fact that AdagioPDF worked properly, but the printer did not would tend to point away from Receivables having a problem.
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Andrew Bates