So i've read through the forums and see the issue of zz_tst files popping up from time to time, regarding preview errors etc.
I've never been clear on a few items,
is it a best practice to delete the zz_tst_x_#_manifest files from the root?
is it a best practice to delete the zz_tst_x_#_#_username_preview.asp files from the root?
if so how often?
results/implications of deleting those files?
Thank,
Nico