User gets a 'Runtime Error' message on a client machine while using Simple Time Card in Web Suite 20xx.
While doing the same thing on the server machine, user gets another error 'Operation is not valid...'.
This error seems to occur due to a patch released by Microsoft for ASP.NET. It can be fixed in the following way:
1. Find the web.config file at C:\Program Files (x86)\BillQuick Web Suite\Web Suite 20xx\Public\.
2. Make a backup copy of this file before modifying it.
3. Open this file in Notepad. You should find an appSettings area in the web.config file.
4. Simply change the code to what is seen below and save your changes.