My main Browser is Firefox with security feature enabled - amongst them an Ad-Blocker. Somehow this Adblocker forces PTCs webpage to trigger that 404 Server Error (resp. to not deliver the page with the file download).
In my eyes this is a bug in the design of the PTC website - the simple download of a file should not cause any problems even with activated AdBlocker.
Disabling the adblocker for PTC domain is not an option as I block a lot of items here to make the forum look cleaner and better useable. But none of the blocking rules applied would refer to the addresses used in the down link for the file which failed. So the culprit are not the extra rules I added but the default settings of the blocker which usually don't cause any problems on any other sites i visit and/or download from.
I guess that the reason for @ppal not to be able to download the file is a similar one!? Not sure if he is surfing using an AdBlocker but I'm pretty sure that many people are doing so.
As we now know of the problem a workaround sure is to temporary disable the adblocker but this sure shouldn't be necessary and I wouldn't have even thought of doing that if @terryhendicott hadn't written that he could access the file with Chrome. I then tried it with Chrome and it worked - hence the idea to lower the security a bit in Firefox to try it again.
