Crash-Report: http://pastebin.com/7S1Wn1wi

I did a really quick search and found these issues: #165 #241
It is almost exactly the same issue I have come across, where players would crash on respawn and the only way to fix it would be to delete the active affect Id: 111 which at the time was the problematic potion effect id. It took me some time but I eventually found the problem was in the AWWayofTime.cfg file the potion id section looked like this:

"potion id" {
    I:Amphibian=115
    I:Boost=101
    I:Deaf=113
    I:DemonCloak=114
    I:Drowning=100
    I:FeatherFall=114
    I:FireFuse=109
    I:FlameCloak=106
    I:Flight=104
    I:HeavyHeart=108
    I:IceCloak=107
    I:Inhibit=103
    I:PlanarBinding=110
    I:ProjProt=102
    I:Reciprocation=105
    I:SoulFray=111
    I:SoulHarden=112
}

I replaced it with my client's config file which looked like this:

"potion id" {
    I:Amphibian=115
    I:Boost=101
    I:Deaf=113
    I:DemonCloak=114
    I:Drowning=100
    I:FeatherFall=114
    I:FireFuse=109
    I:FlameCloak=106
    I:Flight=104
    I:HeavyHeart=108
    I:IceCloak=107
    I:Inhibit=103
    I:PlanarBinding=110
    I:ProjProt=102
    I:Reciprocation=105
    I:SoulFray=115
    I:SoulHarden=116
}

In the player .dat file when someone died under the active effects they would have 'Id: 111' and 'Duration: 6000' but the duration was sometimes a few numbers less than that. I went into my singleplayer world to see if I would crash on death, and I didn't. However, I was assigned the amphibian effect for 5 minutes, and that's how I got to this config file. Once I replaced the section of it above on the server with my own, then it worked.

I would also like to point out that It works with Amphibian and SoulFray having the same IDs, also DemonCloak and FeatherFall do too.

I haven't started using Blood Magic yet (though I plan too) So I don't know much about it. I just experienced this on a DW20 1.7.10 v1.1.1 pack private server last night, and I wanted to let you know about it. Also, this will crash any players in render distance of someone who respawns.

If you need any more information, please ask.

Thank you,

~tarper24