hi folks, i'm having some trouble installing the trial version of sketchup 7 pro!!!

after it unpacks the installation file, i get the following error:



Setup has detected that the file
'C:\DOCUME~1\Amer\LOCALS~1\TEMP\VSD1A.tmp\Conversa ntDotNexFxIntel\dotnetfx.exe' has changed since it was initially published. Click OK or retry the download. or Cancel to exit setup.



WHAT DO I DO?!?

any help appreciated! thanks ....