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no, rom wasnt backed up , i had loaned the cam out to a friend who loaded magic lantern , cam was returned with error code 70 , i used eos utility to test it, generates error 80 camera generates a error 70 in m mode without  card camera generates a error 70 in c mode without card
camera starts up in all modes , if i switch on liveview , it generates a junk display , if i click the shutter it generates a error 70 ,if i load magic lantern to troubleshoot the camera hang after a few minutes , sd card light will turn on and stay on , while browsing through the debug menu i saw the memory underflow and cpu temperature
dm-spy log for this code (don't click me on current dm-spy-experiments branch): Code:

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    void* job = (void*) call("FA_CreateTestImage");

    call("FA_CaptureTestImage", job);

    call("FA_DeleteTestImage", job);

http://pastebin.com/pGPG9KeT

The message that may indicate an error: Code:

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ShootCaptu:ff155d90:93:16: ->FactoryMode AbortCaptureImagePath!!

Also, the crash log OP is experiencing: Code:

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ASSERT: 0

at ./Memory/Memory.c:575, task RscMgr

lv:0 mode:4

Magic Lantern version : Nightly.2016Apr23.70D111A

Mercurial changeset   : 591ba5bf7c75 (70D-merge) tip

Built on 2016-04-23 19:23:06 UTC by ml@ml-VirtualBox.

Free Memory  : 227K + 1951K

matches these lines from the capture test log: Code:

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    RscMgr:ff0c308c:8b:06: ASSERT : ./Memory/Memory.c, Task = RscMgr

    RscMgr:ff0c30a0:8b:06: ASSERT : Line 575

    RscMgr:ff0c30b4:8b:06: ASSERT : 0

so it seems to be an error message generated by Canon code (probably one of the error handling paths doesn't do proper cleanup).

@nikfreak: can you upload a dm.log from your 70D taken in the same conditions? (M mode, ISO 100, 1/125, f/5.6, don't click me on 1166ef2d from your repo).
FOR MORE cANNON 7D ERROR, FOLLOW http://www.carddata-recovery.com/blog/fix-canon-7d-error-card-cannot-accessed-reinsertchange-card-format-card-camera-recover-photos-videos.