Hadn't been playing DesktopD for about 2 months as it at that time suddenly got serious graphic errors on every browser I tried (strange vector lines crossing the game screen - I couldn't get rid of them).
I started the game for the first time again today and now the Unity player don't work at all - no change done to it on my computer since I played 2 months ago, and at that time it started the game, despite the graphical errors.
I saw the answer to the previous poster below and as I maybe have the same problem I tried the following:
1. Emptied every cache/history/etc in firefox, internetExplorer, googleChrome.
2. Emptied every cache/history/etc on my computer.
Downloaded Unity and reinstalled it from the "Install manually" option that appears when Unityplayer don't load.
To no effect. I can't seem to find an upload option on this forum with the screenshot so I'll just describe it:
It says "error loading unity player" with options; "error details" and "install manually". When pressing "eror details" an infobox appears saying; "failed to load unity dll". I have reinstalled, reloaded and "un-cached" (as seen above) several times on both firefox, internetExplorer and googleChrome. Same problem on all of them. (The old graphical error also was the same on all browsers - but I don't know if that one is still there as the game don't load)
For information: I am using the latest WIndows XP as operative system.