[0.12.7] Save progress stuck on 0%

[voyta]

Once in a while, the save dialog gets stuck on 0% progress and does not progress any further even after 20 minutes. Process has to be killed.
screenshot and process dump (from task manager): http://we.tl/6qvmJkb6G9

I've seen similar behavior in earlier 0.12.x versions, but it took only ~10-30s, and eventually the save went on successfully.

log doesn't show anything unusual:
0.002 2015-09-17 17:03:10; Factorio 0.12.7 (Build 16743, win64)
0.002 Operating system: Windows 7 Service Pack 1
0.002 Program arguments: "C:\Program Files\Factorio\bin\x64\Factorio.exe"
0.002 Read data path: C:/Program Files/Factorio/data
0.002 Write data path: C:/Users/null/AppData/Roaming/Factorio
0.002 Binaries path: C:/Program Files/Factorio/bin
0.146 Initialised Direct3D:[0] NVIDIA GeForce GTX 550 Ti; driver: nvd3dumx.dll 10.18.13.5382
0.147 [0]: \\.\DISPLAY1 - NVIDIA GeForce GTX 550 Ti {0x05, [0,0], 1920x1080, 32bit, 60Hz}
0.208 Graphics options: [FullScreen: false] [VSync: true] [UIScale: 100%] [MultiSampling: OFF] [Graphics quality: normal] [Video memory usage: all] [Screen: 255]
0.452 Loading mod core 0.0.0 (data.lua)
0.465 Loading mod base 0.12.7 (data.lua)
0.799 Loading mod bobassembly 0.12.3 (data.lua)
0.884 Loading mod bobenemies 0.12.4 (data.lua)
0.993 Loading mod bobores 0.12.4 (data.lua)
1.158 Loading mod Landfill 2.1.5 (data.lua)
1.269 Loading mod bobtech 0.12.2 (data.lua)
1.387 Loading mod bobplates 0.12.5 (data.lua)
1.942 Loading mod bobelectronics 0.12.3 (data.lua)
2.090 Loading mod boblogistics 0.12.4 (data.lua)
2.936 Loading mod bobmining 0.12.1 (data.lua)
3.107 Loading mod bobpower 0.12.3 (data.lua)
3.260 Loading mod bobwarfare 0.12.4 (data.lua)
4.052 Loading mod bobmodules 0.12.4 (data.lua)
4.380 Loading mod bobassembly 0.12.3 (data-updates.lua)
4.559 Loading mod bobenemies 0.12.4 (data-updates.lua)
4.774 Loading mod bobores 0.12.4 (data-updates.lua)
4.952 Loading mod bobtech 0.12.2 (data-updates.lua)
5.136 Loading mod bobplates 0.12.5 (data-updates.lua)
5.410 Loading mod bobelectronics 0.12.3 (data-updates.lua)
5.601 Loading mod boblogistics 0.12.4 (data-updates.lua)
5.994 Loading mod bobmining 0.12.1 (data-updates.lua)
6.182 Loading mod bobpower 0.12.3 (data-updates.lua)
6.399 Loading mod bobwarfare 0.12.4 (data-updates.lua)
6.622 Loading mod bobmodules 0.12.4 (data-updates.lua)
6.854 Loading mod bobelectronics 0.12.3 (data-final-fixes.lua)
9.954 Initial atlas bitmap size is 16384
9.965 Created atlas bitmap 16384x8044
40.211 Info Updater.cpp:720: Downloading https://www.factorio.com/updater/get-av ... iVersion=2
41.656 2 packages available to download (experimental updates enabled).
41.764 Factorio initialised
74.610 Loading map C:/Users\null\AppData\Roaming\Factorio\saves\bob02.zip
74.711 Info Scenario.cpp:160: Map version 0.12.7-3
122.421 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave3
373.753 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave1
617.717 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave2
861.167 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave3
1104.995 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave1
1349.222 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave2
1645.007 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave3
1889.259 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave1
2333.683 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave2
2578.569 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave3
2590.602 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/bob03
2605.633 Loading map C:/Users\null\AppData\Roaming\Factorio\saves\_autosave2.zip
2605.758 Info Scenario.cpp:160: Map version 0.12.7-3
2852.731 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave3
3307.296 Verbose Scenario.cpp:528: Saving game as C:/Users\null\AppData\Roaming\Factorio\saves/_autosave1

[voyta]

Also, not sure if it's related, but the game _always_ takes 30s to close (Exit button or Alt-F4/[X] button). I recall (somewhat more vaguely, because I don't have to actually wait for the program to end ) that this also came some time in 0.12.x.

[kovarex]

Do you have the mod folder?

[posila]

I investigated the memory dump you provided (thank you for that) and it seems it hung on writing log entry to standard output. I assume you didn't start the game from command line, so nothing was reading standard output. I am not sure why it is not problem on our computers, but I made a fix that Factorio won't write to stdout if it doesn't have a console attached.
Thanks for the report.

[voyta]

Correct, the game was launched from shortcut (no console). Thanks for looking into it.
I assume the mods are no longer needed, but just in case: http://we.tl/fJl4Qcm71m