I was able to migrate a few times but this time I can't get it to work. It fails at different stages.
I upload install.php and the package file to the remote server into an empty directory with permissions 777. Common for all failures is that I never get to the completed screen with the final checks. Instead, after a minute or two, I get a blank page or there's a "Content Encoding Error" or something else. Looking in the directory the process has stopped at some stage of putting the files into place.
I've set logging to "detailed" but the last line in it is "starting package extraction"
Could it be that it's just not finished yet and I have to wait? I've seen some signs that this could be the case. Unfortunately I have no shell access. How long should it normally take to install a 60 MB package with a 300 KB SQL file? I've waited for 10-30 minutes.