The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters.
at System.Convert.FromBase64_Decode(Char* startInputPtr, Int32 inputLength, Byte* startDestPtr, Int32 destLength)
at System.Convert.FromBase64CharPtr(Char* inputPtr, Int32 inputLength)
at System.Convert.FromBase64String(String s)
at EncryptStringSpace.EncryptString.Decrypt(String inputText) in c:\inetpub\staticFilesHandler\App_Code\EncryptString.cs:line 57
at RewriteURLModule.Application_BeginRequest(Object source, EventArgs e) in c:\inetpub\staticFilesHandler\App_Code\RewriteURLModule.cs:line 51