Hello,
first thanks for this nice software and sorry for my bad english. 
I use it since some month and all was fine.

But today I started it after weeks ago and I have now a big problem! Cause of this problem I can't use DVDProfiler.
- The Tabs in den Filter-Window are without description
- Some Buttons have no description
- for Example the buttons in the option-Window have no description. Also the tabs in option-window to change to the different options. They are all blank
- If I take the mouse over a button (to close the window or assume the preferences or something else) there came much error-messages. "Invalid floating point operation."

So, DVDProfiler is unsuitable. Some weeks ago, I had no problem and I don't change anything.
I use Windows Vista SP1 and I have full administration rights.
- I have reinstalled DVDProfiler -> same problems
- I have installed 3.5 beta version -> same problems
- I changed visual styles to windows classic -> same problems
- restart the computer -> same problems
- change the language in DVDProfiler (which was very hard, cause of the error and missing descriptions) but also -> same problems

I think, you would say: "If it runs without problems some weeks ago and now there are these problems, you changed something on your system".
But see, I really changed nothing. And only in DVDProfiler are these problems. I've tested some other software on my PC and I have no problems. Problems only exists in DVDPfrofiler.

I hope, anyone can help me. I think this is a very good software and I payed for it. And I would be very sad, if I can't use it anymore. 

Yes I have uninstalled it complete before reinstalling. No effect. And also no difference between version 3.1.1 and version 3.5 beta.

My Windows is always up to date. There are no updates available.

EDIT: I have updated graphics-driver. Problems still exists. I have no more ideas. I hope anyone can help me. 

Are you running any software that changes your desktop e.g. Windows Blinds?

Quoting Lithurge:

Quote:
Are you running any software that changes your desktop e.g. Windows Blinds?

No. I have no software installed which changes my desktop or something else. No tuning tools or design-tools.

Quoting northbloke:

Quote:
You say you're running Vista - do you have automatic updates switched on? Is it possible something got changed without your knowledge?

No, I update Vista manually. But my vista is updated. I think, if a vista-update do this problems, other users and other software also must have problems.
For me, only DVDProfiler has this problems. No other software on my PC have problems.

The installation of DVDProfiler has no problems. Only DVDProfiler itself has problems.

As far as I remember this is a known issue some others also had at one point. There is a solution for this but I do not remember what. I hope someone can point to an existing thread for this problem.

Thank you very much!!! I installed the tahoma-font and the issue is solved. 
I didn't delete this font. Any other installation must be guilty.

I think it's a good idea to add such solutions to the FAQ.

Even though the issue is resolved and it is not certain what caused the issue, for future reference I would advice NEVER to use a registry cleaner. The positive effect is minimal at best, and the negative consequences may be disastrous.

Quoting ghoosty:

Quote:
OMG....one missing font caused the whole problem.... 

Thanks to CalebAndCo for pointing me in the right direction, that was the fix.   

No sweat.