Hi Per
From Win8 download page.
"Windows 8 Release Preview is prerelease software that may be substantially modified before it’s commercially released"
FYI: Current Win8 comes default with the IE10 - this IE version is also a pre-release beta version. (released 8 days ago)
We have a browser compatibility check that checks if the current browser is supported. This is done to ensure that fronter and the browser knows how to present and communicate accordingly.
Since we don't incorporate browser support for future versions in beta release, you will likely experience such error notice when using candidate versions.
Usually this can be circumvented by using the Compatibility mode built into IE10.
This will trick websites into believing you are using an official version (likely IE9) and Internet Explorer, and disable some rendering features in the IE10 browser.
Hope this helps.
BR
Thomas Boe Frederiksen
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Please use English language.
Venligst fremover brug engelsk på frontersupport således andre kan få glæde at dine spørgsmål og vores svar.
På forhånd tak.