I'm not sure what has gone wrong here but I have done exactly as you suggested and yet no subs. I even tried to attach the log, caption shot and media shot only to be told the files are to large to upload.
My apologies for the long post.
DVDFab 9.1.9.8 (2015/04/27 06:30:09)
0m 00.04s: Init Public log : enabled.
0m 00.04s: Init Private log : finish.
0m 00.04s: App info: 2015-4-23
0m 00.04s: App info: 9.1.9.8 9198 Official
0m 00.04s: Init CrashReportSettings : enabled.
0m 00.04s: Init DVDInfo_Log : enabled.
0m 00.04s: Init Qt_Log : disabled.
0m 00.17s: Profile Manager :: Begin Load Profile
0m 00.17s: Qt Translator file load success
0m 00.17s: App info: client type 10.
0m 00.19s: MobilePlay load: preload successful.
0m 00.28s: MobilePlay load: Load successful.
0m 00.29s: Init process: Transfer settings successful.
0m 00.29s: info: check logpath= C:/Users/Eric/Documents/DVDFab9/Log/
0m 00.30s: info: _check_gpu is running ...
0m 00.50s: info: check_gpu run successful
0m 00.50s: info: recommand= 0, Shrink support= 0, enable= 0, cuda_cap= 0 , cpu_count= 4
0m 00.50s: GPU check: GPUAccelerate-3
0m 00.50s: GPU check: GPUAccelerate setting-0, 0
0m 00.50s: GPU check: CUDA cap-0
0m 00.50s: GPU check: Support coreavc decode-0
0m 00.50s: GPU check: Lighting shrink status-0, 0
0m 00.50s: GPU check: Graphics info 1: ASUS EAH4350 series : 8.680.0.0 :
0m 00.51s: Init process: Load config successful.
0m 00.51s: Init process: Windows os type is 64bit System Windows 7.
0m 00.51s: Init process: command line in is "D:\"
0m 00.52s: bTimeoutReturn=0
0m 00.52s: Init process: there is another app running and exit.
0m 53.08s: D F63CD073
0m 53.08s: main playlist 00800.mpls
0m 53.08s: selected region A
0m 53.08s: bd set region A
0m 53.09s: got vuk
0m 53.09s: got unit key 1
0m 02.62s: Profile Manager :: End Load Profile
1m 05.02s: got bdmv
1m 15.00s: stream(27,3,0)/clip(27,3,6) infos are not the same, using clip info to regulate it.
1m 18.31s: got extended bdinfo
1m 18.31s: opened blu-ray
1m 18.47s: Source manager: open successful.
1m 20.05s: Work manager: create Converter work 0 with source 0 and uiinfo 0( title 800 ).
1m 21.29s: ========WorkAttr::SetSource=======
1m 21.30s: Source Video Size Original : 1920 x 1080
1m 21.30s: Source Video Size Display : 1920 x 1080
1m 21.30s: Source Video FPS : 24000 / 1001
1m 21.30s: Source Video Bitrate : 1200
1m 21.30s: Source Audio Bitrate : 0
1m 21.30s: Source Audio Channels : 8
1m 21.30s: Source Audio Volume : 100
1m 21.30s: Work Profile : MKV
1m 22.05s: DataDriven:GetBitPixelConfig[h264] min=120.
1m 22.05s: DataDriven:GetBitPixelConfig[h264] max=200.
1m 22.12s: DataDriven:GetBitPixelConfig[h264] min=120.
1m 22.12s: DataDriven:GetBitPixelConfig[h264] max=200.
1m 22.15s: DataDriven:GetBitPixelConfig[h264] min=120.
1m 22.15s: DataDriven:GetBitPixelConfig[h264] max=200.
14m 56.04s: DataDriven:GetBitPixelConfig[h264] min=120.
14m 56.04s: DataDriven:GetBitPixelConfig[h264] max=200.
14m 56.32s: DataDriven:GetBitPixelConfig[h264] min=120.
14m 56.32s: DataDriven:GetBitPixelConfig[h264] max=200.
14m 56.36s: DataDriven:GetBitPixelConfig[h264] min=120.
14m 56.36s: DataDriven:GetBitPixelConfig[h264] max=200.
14m 56.39s: DataDriven:GetBitPixelConfig[h264] min=120.
14m 56.39s: DataDriven:GetBitPixelConfig[h264] max=200.
14m 56.45s: DataDriven:GetBitPixelConfig[h264] min=120.
14m 56.45s: DataDriven:GetBitPixelConfig[h264] max=200.
14m 58.99s: UILog:OnMsgToolbar_Start
14m 59.00s: UILog:Msg Start : ready start
14m 59.00s: UILog:Msg Start : start test run work
14m 59.02s: UILog:right button to null, work falg = -1
14m 59.26s: UILog:Msg Start : run work
14m 59.26s: UILog:Run current Work.
14m 59.26s: UILog:Begin work Converter.
14m 59.26s: UILog:Begin work copy or converter.
14m 59.26s: Start check Blu-ray Ripper (3D Plus) register status.
14m 59.26s: End check Blu-ray Ripper (3D Plus) register status: Enable
14m 59.26s: UILog:start running at thread.
14m 59.28s: UILog:return flag at start running at thread ok.
14m 59.33s: OPList at BD Converter : (4113.2),(4352.2),(4612.32)
14m 59.34s: Blu-ray Converter (3D Plus) check watermark flag: 0
14m 59.34s: ------------------ convert work begin(1/1) ------------------
14m 59.34s: start process(1/1)
14m 59.35s: info: create config(bluray2video)
14m 59.37s: info: crop value after clone: left = 0 right= 0 top=0 bottom=0 enable=0 mode=0
14m 59.37s: info: use profile(MKV)
14m 59.37s: info: bluray playlist(800),angle(0),chapter(1->21),BDAV(no)
14m 59.37s: info: 3D working_mode(disable), 3D format(sbs_lef_right)
14m 59.47s: info: stream input@ Video(4113)[codec(h264) size(1920*1080) fps(24000/1001) interlace(0) duration(8574)sec opcode(compress)]
14m 59.47s: info: perset file config OK !
14m 59.48s: info: set output video frame_rate(24000/1001)
14m 59.48s: info: stream output Video(4113)[codec(h264) size(1920*1080) fps(24000/1001) interlace(0) bitrate(7458) duration(8574)sec]
14m 59.49s: info: stream input@ Audio(4352)[codec(dca) channels(8) sample(48000) bitrate(0) bitdepth(24) opcode(compress)]
14m 59.52s: info: stream output Audio(4352)[codec(ac3) channels(6) sample(48000) bitrate(448000) bitdepth(16) opcode(compress)]
14m 59.52s: info: stream input@ SubPicture(4612)[codec(pgssub) language(English) opcode(remux)]
14m 59.52s: info: stream output SubPicture(4612)[codec(pgssub) language(English)]
14m 59.52s: info: SubMode(Remux) -- Display Only forced Subtitle(false)
14m 59.55s: UILog:MsgWork:WorkStatus_Start
14m 59.55s: info: enable multi-thread software decoder, thread count = 4
14m 59.56s: info: ex process path= C:/Program Files (x86)/DVDFab 9 US/fabcore.exe
14m 59.65s: info: h264_encode: encode param profile(2) level(41) bitrate(7458) crf(-1) interlace(0)
14m 59.69s: info: processing source(00800.m2ts)
151m 18.56s: info: bluray read data end
151m 22.61s: info: enable multi-thread software decoder, thread count = 4
151m 22.65s: info: h264_encode: encode param profile(2) level(41) bitrate(7458) crf(-1) interlace(0)
151m 51.98s: info: processing source(00800.m2ts)
292m 01.66s: info: bluray read data end
292m 01.70s: info: audio_decode finish job
292m 02.74s: audio_encode finish job
292m 09.10s: ------------------ convert work finished ------------------
292m 10.26s: UILog:MsgWork:current work finish : 3
292m 14.92s: UILog:Run Work to end.
292m 14.94s: DriveX msg: remove media in driveX D.
292m 16.66s: Source manager:open source flag:1,0,1,1,1
292m 45.77s: Warning : Null Data at Work
292m 52.15s: Source manager:open source flag:1,1,1,1,1
295m 03.73s: opening drive D
295m 03.74s: opened i/o
295m 03.75s: got media type 15
295m 04.16s: got max lba 22827423
295m 05.05s: got disc type 20
295m 05.05s: type Blu-ray BDMV
295m 05.05s: volume label MARVELS_THE_AVENGERS
295m 05.05s: DriveX msg: add media in driveX D.
295m 05.05s: DriveX msg: send open media msg to thread for driveX D.
295m 05.05s: Source manager:open source flag:1,1,1,1,1
295m 05.06s: Source manager: add source id 1.
295m 05.08s: bd set region ?
295m 05.08s: Source open status:DVD Yes, 2231-10-11
295m 05.08s: Source open status:BD Yes, 2231-10-11
295m 05.08s: bd set region A
295m 05.08s: internal path D:/BDMV/
295m 05.09s: aacs 1 bd+ 0
295m 05.65s: got bdmv
295m 06.92s: movie name: marvel's the avengers||marvels_the_avengers
295m 06.93s: got agid 0
295m 06.95s: sent host cert chal
295m 06.95s: got drive cert chal
295m 06.95s: BEC 0
295m 06.95s: DRIVE_VENDOR 0x0116
295m 06.99s: got drive key
295m 06.99s: got host key signature
295m 06.99s: verified drive signature
295m 06.99s: verified host signature
295m 07.03s: sent host signature and key point
295m 07.03s: got bus key
295m 07.03s: got volume id
295m 07.03s: got volume id mac
295m 07.03s: volume id is correct
295m 07.04s: got vid
295m 07.18s: blu-ray 8D446AEC8F7214372BC86FA8201DBE48B98488AF
295m 07.81s: cert BEE=0x00 same
295m 09.27s: D F63CD073
295m 09.27s: main playlist 00800.mpls
295m 09.28s: selected region A
295m 09.28s: bd set region A
295m 09.28s: got vuk
295m 09.28s: got unit key 1
295m 20.71s: got bdmv
295m 30.85s: stream(27,3,0)/clip(27,3,6) infos are not the same, using clip info to regulate it.
295m 34.37s: got extended bdinfo
295m 34.37s: opened blu-ray
295m 34.53s: Source manager: open successful.
295m 35.96s: Work manager: create Converter work 1 with source 1 and uiinfo 1( title 800 ).
295m 36.72s: ========WorkAttr::SetSource=======
295m 36.72s: Source Video Size Original : 1920 x 1080
295m 36.72s: Source Video Size Display : 1920 x 1080
295m 36.72s: Source Video FPS : 24000 / 1001
295m 36.73s: Source Video Bitrate : 1200
295m 36.73s: Source Audio Bitrate : 0
295m 36.73s: Source Audio Channels : 8
295m 36.73s: Source Audio Volume : 100
295m 36.73s: Work Profile : MKV
295m 37.46s: DataDriven:GetBitPixelConfig[h264] min=120.
295m 37.47s: DataDriven:GetBitPixelConfig[h264] max=200.
295m 37.50s: DataDriven:GetBitPixelConfig[h264] min=120.
295m 37.50s: DataDriven:GetBitPixelConfig[h264] max=200.
295m 37.51s: DataDriven:GetBitPixelConfig[h264] min=120.
295m 37.52s: DataDriven:GetBitPixelConfig[h264] max=200.