Formula labview 8.5

hello,
I have installed labview 8.5 base development but I cannot use the formula vi, I don't know why?
I have a blank window as in the picture, is this a LV8.5 bug?
thanks for help,
Attachments:
arithmetic and comparison.GIF ‏26 KB

Thanks for the info.It is wierd this issue.
When I tried to reload the same code in another computer I have to redo the same exercise meaning load the formula vi from the NI program file\lib ....it is really not handy.
On top of that I have many problem since I have installed LV8.5 (see pictures), the program crashes all the time.
Is there anyway to avoid this???
thanks for advise.
Attachments:
LV8_5 error1.JPG ‏17 KB
LV8_5 error2.JPG ‏20 KB

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