I helped someone else with this problem just yesterday. The background information for this problem is discussed in this blog post:
The problem is that ISO codes changed for some languages, in this case it is specifically the Traditional Chinese translation, where the ISO code changed from zh-CHT to zh-Hant. Our resource file for this language uses the new name Resource.zh-Hant.resx, but your machine apparently does not recognize the new ISO code zh-Hant and it causes this error.
The first thing you should do is run Windows Update and make sure you are up to date on all .NET updates and service paks. After doing that your machine may correctly recognize zh_Hant and if so it will fix the problem for you and this would be the best solution.
If getting all the updates does not solve it, try renaming the file Web/App_GlobalResources/Resource.zh-Hant.resx to Web/App_GlobalResources/Resource.zh-CHT.resx
If that doesn't work try just deleting the file that you renamed to Resource.zh-CHT.resx
Please let me know which of these solutions worked for you.
Hope it helps,