…when trying to create a torrent with 240k files. I wish I could put this in subject, but it's apparently too long.
Google finds only one other reference to this error in the exact same situation (many files) with no solution. I am on Win 7 x64, Tixati 2.51.

I'm getting the same error when I try to create a torrent with 542K files at 1.2 TB (its a big directory of weather data).  Haven't found a client that can make a torrent for it yet.  Might have to break it up....

Maybe put the files into a zip or rar or gz? than make a torrent of that?

im running into this issue when trying to download a torrent with a large amounts of parts, can this be looked into?

what OS and what version of tixati?'
what is "large amounts of parts"? do you mean many pieces or large pieces?
post a link to the torrent or magnetlink so the devs can look at the torrent.

Hi, there is the same error 'Invalid file system in meta-file' (but works well in BitComet)
91.1 Gb

version: Tixati v3.17 x64
torrent: (torrent removed by Mod and sent to Devs)

I'd like to add that I've seen the same error on 3 torrents from this page
(Link removed by Mod and sent to Devs)
specifically:
DEF CON 25 v1v2
DEF CON 16 v1v2
DEF CON 12 v1v2

the "v1" only files load fine, and the rest of the hybrid torrents on this page load fine into Tixati.

Thanks for reporting this.
The torrents have been sent to the Dev and he is working on it.

Be sure to upgrade to 3.18, this issue has been fixed.