Server Error in '/' Application.

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The resource cannot be found.

That is the error that came up when I went in and changed skins.  I had a skin working and I changed to a newly uploaded one.  It gave me this message so I switched back and I still got the message. Yesterday I got the same error, but I restored the database to a previous time and everything then worked alright.

I really do not want to have to keep restoring the database everytime I change skins. Hopefully someone has an idea.

Thanks.

O yea, I here is the log for this error.

General Exception Error.
AssemblyVersion: 04.03.06
PortalID: -1
PortalName:
UserID: -1
ActiveTabID: -1
ActiveTabName:
RawURL: /Default.aspx?tabid=36&error=The+Controls+collection+cannot+be+modified+because+the+control+contains+code+blocks+(i.e.+%3c%25+...+%25%3e).&content=0
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 46a337c6-792d-40fa-90ac-5aae4e618d52
InnerException: Unhandled Error:
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest
StackTrace:
Message: System.Exception: Unhandled Error: ---> System.Web.HttpException: Not Found at DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) --- End of inner exception stack trace ---
Source: