Just an FYI for Sage 100 v2018 PU1 w/Payroll 2.18 PREMIUM... I haven't tested it with Advanced version yet, but I really think it'll be the same situation...
When Spawn Tasks is CHECKED in User Maintenance/Preferences, clicking on the ""Direct Deposit Stub"" button in Check Printing will throw an error 26 and crash the system. I've tested on my system as well as client system. I get varied results as far as whether or not I actually see an error, but the server going down and having to kill all pvxwin tasks & restart the application server service is the same.
Just wanted to share as it took me a stupid amount of time to track down the cause & Sage wasn't aware of the issue.