I used to have mt4 without a problem. I installed an indicator and after that I could not open the platform again. So, I uninstalled and downloading everything again, but nothing change. Now after many times of the same process. I can't donwload it. You can see the message I got every time I try.
Thank you for your help.
Trying installing it to a different folder. For example, I have my terminals installed in C:\Users\User\Dropbox instead of C:\ProgramFiles...
If you do that then you better run it in portable mode as well. If you don't know how to run MT in portable mode just google it. :)