It is possible that your APPOSTP.dat data file (that contains the period end clearing posting journal information) is out of synch with your company profile - which contains the range of posting sequences that should exist. This could have happened because you chose to purge the report but APPOSTP did not purge to zero bytes, or because the file was manually removed or lost instead of printing the report to purge.
If the file has non-zero size and you are sure that the report has been printed, rename the extension of this file to something like 'old' to make it invisible to the program, and try again. The symptoms of this error is that as soon as you try to print the report, you immediately get a 'nothing to print' message.
If you get the opportunity of seeing the Period End clearing posting journal screen and a range of sequences, but clicking Print gives the 'nothing to print' message, then the reverse is true and the data file was lost. This one is harder to fix - you have to run period again and 'hope' that more transactions are cleared and another posting sequence is generated. This might also require a database repair.
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Regards,
Softrak Tech Support