Within the mc-Studio folder, that should reside (by default) in your documents file, there is a settings file that you can delete. This settings file contains the information on your last project and as mentioned, sometimes causes a crash within mc-studio. Deleting the settings file should solve that problem (See below picture)
Also I deleted the McScript from McOtha by accident, could you provide a link to download it? I can only find the .bin files for the 110 module.
When using mc-OTA, you have the option to erase the script that was loaded onto a module or an mc-Demo205 device. This does not delete the firmware on the device, it only allows you to delete the program/script that was loaded onto the device. This is an option in-case you create a script that 'locks' the device. An example of this would be accidentally changing the connection interval of the modules to a very high number (say 1 week as an example) and then you need to wait 1 week to actually connect to the module again to program it. With this option, you can then erase the script that is loaded onto the module and then it will go back to the default settings.
mc-Demo205 - In regards to the mc-Demo205, there is no new firmware for the device as of yet however, we will be making a section on our download section of the website to include the pertinent documentation for the device as well as a place for new firmware when available.
Then I tried opening the GPS sample code and it crashed with a code similar or the same to the one I attached first. Since then I can't open McStudio.
Please try deleting the settings file as mentioned above and in the attached picture. This should solve the problem
Let us know if you have any issues and thanks!