what do you mean by crashed ? time out ? or the data stop to be downloaded.
i download games through the browser aswell , time to time i got a time out or the d/l speed is so low.. / but i get less issues than the gogdownloader itselt
since u can't resume via the browser , u need to restart to d/l the file or use a 3rd party downloader manager
someone mentioned this 3rd party downloader manager : Down Them All working with gog servers.
so if u get an error with this tool , i guess u need to write to the support , only them can help you.
When i start the insttalation write the 2 files is crashed
u mean during the installation procedure ?
normaly an integrity check is done, (except if you refuse the integrity check)
if the installation crash t's probably due to incomplete or corrupted files (those you speak of). , if so you need to redownload them.
now if it's when u try to download those file , mmm, i don't know, it's work for me (at least they start to download properly)
if the problem persists , i don't know, u should contact the support.