I have had the same situation, (several times  ), and what I found was :

in the logs folder for the server, (e.g.  ...\profiles\app\logs\server1 )
there is a file called server1.pid, in this case, this file, contains the pr
ocess id for the server process.

This file it's supossed to be deleted when the server shuts down, but when t
he server crash down, or when some 'unusual' situation happens the file is n
ot deleted, then when the server is trying to start and find this file, it d
oesn't start and give some
weird exceptions, I don't know why, because I checked and the process id in 
the file most of the time it's not used by the OS, anyway the server simply 
doesn't start.

What works in my case, was simply deleting the file, and start the server, a
nd everything went fine.

I hope this works for you too.

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