Access denied solved by ¨disabling rollback

Question

We had an eval license of Contribute 3 which was working
fine. Users could edit and publish pages without any problem. I
then purchased Contribute 4 (which was just out) and installed. Now
users got "Access Denied. The file may not exist, or the could be a
permission problem." when they tried to publish a page. The page
actually was published but it gave the error message anyway. After
reading in the ng:s etc. I turned on the option to allow file
deletion for the group (to allow .lck files to be removed). Now it
still showed the access denied error but no page was published and
there was no .lck files creates. After reading some more I decided
to try to disable the rollback feature and now all of a sudden it
works like expected. But hey, rollbacks are great, I don't want to
do without it! Why does it only work with rollback disabled? I am
fairly sure that file/share permissions are OK since it worked fine
with the Contribute 3 eval license.

Answer 1

I am having the same problem with a WebDAV connection to a
new server. We used to use SFTP and "rollback" worked fine. With
the WebDAV connection and Contribute 3.1, I get an error of "Access
Denied. File May Not Exist or there could be a permission problem".
Looking at the remote files on the server, the original file is
gone replaced with a file with a .new extension. If I disable
"rollback" and delete the .new extension, it works.
The "rollback" feature also breaks Dreamweaver's file upload
capability.
Any ideas?