You mention a dialog that came up, but the message isn't appearing in the forum. Can you post that error message so the user community can help?
The dialog is "Not enough space available".
DMNL, do you have another drive partition with more room you can use for Impulse's temp files storage? Otherwise, your only solution is to free up some on your C drive. If you have another partition, you can change the temp folder by going to blue orb > preferences > folders.