Launcher installing update, crashes, requires full reinstall, please help

I start Eve, my internet connect glitch (using mobile internet). I reconnect internet, relaunch Eve. Error mesage.

Could not write file

There was an error writing a file to disk (see log for details).

If there are EVE clients running they might prevent updating files.

This could be also be caused by incorrect file permissions. Do you want me to try to fix permissions for the shared cache folder? (C:/EVE2/SharedCache/)

Retry Ignore &Yes

The only way to fix this I have found is full install, please for the love of god is there an easier way?