Memory Exception Happened Pop-Up, Despite plenty of Memory

[hellyars]

I just had a pop-up window that states that Alteryx...

"An out of memory exception happened"   With the option to close.  Re-opening Alteryx allows me to recover my workflows.

My machine has 64GB or RAM.

My user setting is set to override system settings and the memory limit is set to 36000 MB.

Additionally, Task Manager showed Alteryx using less than <2 GB and total system memory at 21%.

Input files are just a few MB with no single tool in the workflow generating more than a few MBs.

This is the second or third time in the last week or two (different workflows each time).