The last half dozen times I have tried to switch from any other puzzle to an ED puzzle, the client has promptly crashed. When I open a new client it opens the ED puzzle without a problem. This has happened with both 714 and 655. Win 7 64, latest devprev.

end of log.txt from most recent crash:

core.scoring.electron_density.ElectronDensity: Loading Density Map
core.scoring.electron_density.ElectronDensity: Setting resolution to 3A
core.scoring.electron_density.ElectronDensity: atom mask to 3.2A
core.scoring.electron_density.ElectronDensity: CA mask to 6A
core.scoring.electron_density.ElectronDensity: Read density map'0000995108.ir_puzzle.density'
core.scoring.electron_density.ElectronDensity: extent: 93 x 83 x 67
core.scoring.electron_density.ElectronDensity: origin: 0 x 0 x 0
core.scoring.electron_density.ElectronDensity: altorigin: 0 x 0 x 0
core.scoring.electron_density.ElectronDensity: grid: 93 x 83 x 67
core.scoring.electron_density.ElectronDensity: celldim: 53.7735 x 47.9914 x 39.6353
core.scoring.electron_density.ElectronDensity: cellangles: 90 x 90 x 120
core.scoring.electron_density.ElectronDensity: crs2xyz: 1 x 2 x 3
core.scoring.electron_density.ElectronDensity: symBytes: 0
MINMULT: 2 2 2
core.scoring.electron_density.ElectronDensity: max_del_grid =1.5
core.scoring.electron_density.ElectronDensity: Density map stats:
core.scoring.electron_density.ElectronDensity: min = -2.60996
core.scoring.electron_density.ElectronDensity: max = 8.71731
core.scoring.electron_density.ElectronDensity: mean = -0.00432873
core.scoring.electron_density.ElectronDensity: stdev = 0.628753
core.scoring.electron_density.ElectronDensity: CoM = 44.5433 , 38.2589 , 30.3255
core.scoring.electron_density.ElectronDensity: xform = 29.7778 , 41.5618 , 39.6353
core.scoring.electron_density.ElectronDensity: efforig = 0 , 0 , 0
has key .owts_patch
protocols.evaluation.ChiWellRmsdEvaluatorCreator: Evaluation Creator active ...
has key .opdb
core.scoring.electron_density.FastDensEnergy: Creating new one-to-all energy container (96)
core.scoring.electron_density.ElectronDensity: Resizing 93x83x67 to 190x168x136

UNHANDLED EXCEPTION
1: RaiseException +88 bytes (no line)
2: library_main +28269581 bytes (no line)
3: library_main +28269508 bytes (no line)
4: library_main +5699209 bytes (no line)
5: library_main +5703610 bytes (no line)
6: library_main +27752376 bytes (no line)
7: library_main +19413795 bytes (no line)
8: library_main +19417310 bytes (no line)
9: library_main +21587057 bytes (no line)
10: library_main +19048638 bytes (no line)
11: library_main +19061531 bytes (no line)
12: library_main +4261005 bytes (no line)
13: library_main +2369940 bytes (no line)
14: library_main +1364580 bytes (no line)
15: library_main +916524 bytes (no line)
16: library_main +2996698 bytes (no line)
17: library_main +3979636 bytes (no line)
18: library_main +3982982 bytes (no line)
19: library_main +3683950 bytes (no line)
20: library_main +3580988 bytes (no line)
21: library_main +5780553 bytes (no line)
22: library_main +3580233 bytes (no line)
23: library_main +5787108 bytes (no line)
24: library_main +5789415 bytes (no line)
25: gapfnScSendMessage +818 bytes (no line)
26: GetThreadDesktop +215 bytes (no line)
27: GetClientRect +197 bytes (no line)
28: CallWindowProcW +27 bytes (no line)
29: wglSwapBuffers +730 bytes (no line)
30: gapfnScSendMessage +818 bytes (no line)
31: GetThreadDesktop +215 bytes (no line)
32: CharPrevW +312 bytes (no line)
33: DispatchMessageA +15 bytes (no line)
34: library_main +5794819 bytes (no line)
35: library_main +3573453 bytes (no line)
36: library_main +28757 bytes (no line)
37: library_main +29 bytes (no line)
38: no symbol (no line)
39: no symbol (no line)
40: no symbol (no line)
41: BaseThreadInitThunk +18 bytes (no line)
42: RtlInitializeExceptionChain +99 bytes (no line)
43: RtlInitializeExceptionChain +54 bytes (no line)