[SOLVED] Is there a way to debug installation crash ?

Hello guys,

I'm trying to install the version 5.6.1 with UnityInstaller,
It crashes on the validation of the first step, it downloads Unity then on the checking it displays this information "Error while installing Unity. (Error code: UnitySetup64.exe)"

I have a windows 7, with 64 bit OS

Do you have an idea how can I debug this ?

I tried to check in the Event Viewer but nothing...

Thank you

 

It seems that the problem was a security issue...
In the step "Choose Download and Install locations" of the unity launcher, i let the choice "Download files to temporary location (will automatically be removed when done)" and it seems that i didn't have the right to execute programs on the target folder...
I've chosen "Download to:" and selected my "Downloads" folder and it works now.

Hope it helps someone...