CMD Command error

Hello folks,

I've had a task for Disk Cleanup that's been working for a while, but since the v18 upgrade, I get the following error about a two thirds of the way through a command.

"The data area passed to a system call is too small"

If feel like i've seen this error before and it was solved by increasing a setting somewhere, but I can't remember for the life of me where.

Does any one have any ideas, or even if it's a different issue what a fix might be?

Cheers