Sorry to report that version 211 did not solve my issue.
http://yabb.jriver.com/interact/index.php?topic=81801.0 I cannot watch movie all the way through on Client. it stops/freezes after playing for a while. I thought it might be network related so I ran the same movie on two different Clients at the same time (movie: Blu-ray version of Hobbit, ripped to m2ts). The movie played okay for a while then stopped on each machine - but at different times. The one I was watching just said "Buffering" but was froze and then returned to Theater View menu by itself. The other played for a while longer (I could hear it in the other room) when I went to check on it, it had also returned to menu.
BTW - I did play this movie all the way through on the Server. It's just the Clients that seem to have difficulties.
Obviously this is not a common problem. I'm thinking about just formatting and reinstalling from clean drive (maybe go to Win8) but if this problem is of any diagnostic value to JRiver, I'll keep working on it.
If you'd rather move on with MC19 stuff - that's okay too - let me know and I'll start formatting drives.
Here is part of the log - the part where things change (it is attached):
1257368: 4056: Playback: BufferedInternetReader::FindEarliestHolePosition: number of download threads=3
1257368: 4056: Playback: BufferedInternetReader::FindEarliestHolePosition: Next hole - 3141446656
1257368: 4056: Playback: BufferedInternetReader::FindEarliestHolePosition: Finish (0 ms)
1257368: 4056: Playback: BufferedInternetReader::MonitorDownloadThread: Finish (0 ms)
1257415: 4056: Playback: BufferedInternetReader::MonitorDownloadThread: Start
1257415: 4056: Playback: BufferedInternetReader::MonitorDownloadThread: getting lock
1257415: 4056: Playback: BufferedInternetReader::FindEarliestHolePosition: Start
1257415: 4056: Playback: BufferedInternetReader::FindEarliestHolePosition: Next hole - 3141446656
1343293: 1788: Reader: CWinINetReader::Close: Finish (31 ms)
1343293: 3248: Playback: BufferedInternetReader::OnThreadEnds: Start
1343293: 3248: Playback: BufferedInternetReader::OnThreadEnds: getting lock
1343293: 3248: Playback: BufferedInternetReader::OnThreadEnds: Finish (0 ms)
1343293: 3248: Playback: BufferedInternetReader::Close: deleting threads array
1343293: 3248: Playback: BufferedInternetReader::Close: stopping monitor thread
1343325: 3248: Playback: BufferedInternetReader::Close: closing and deleting reader
1343325: 3248: TV: VSplitterReader::DeleteStaleChunks: Start
1343325: 3248: TV: VSplitterReader::DeleteStaleChunks: Finish (0 ms)
1343325: 3248: Playback: BufferedInternetReader::Close: closing and deleting writer
1343325: 3248: TV: VSplitterReader::DeleteStaleChunks: Start
1343325: 3248: TV: VSplitterReader::DeleteStaleChunks: Finish (0 ms)
1343652: 3248: Playback: BufferedInternetReader::Close: Finish (390 ms)
1343652: 3248: Playback: BufferedInternetReader::Close: Start
1343652: 3248: Playback: BufferedInternetReader::Close: getting lock
1343652: 3248: Playback: BufferedInternetReader::Close: stopping download threads and closing downloading readers
1343652: 3248: Playback: BufferedInternetReader::Close: deleting threads array
1343652: 3248: Playback: BufferedInternetReader::Close: stopping monitor thread
1343652: 3248: Playback: BufferedInternetReader::Close: closing and deleting reader
1343652: 3248: Playback: BufferedInternetReader::Close: closing and deleting writer
1343652: 3248: Playback: BufferedInternetReader::Close: Finish (0 ms)
1343652: 3248: Podcast: CDXColorControls::Clear: Start
1343652: 3248: Podcast: CDXColorControls::Clear: Finish (0 ms)
1343652: 3248: Playback: CSubtitleEngine::~CSubtitleEngine: Start
1343652: 3248: Playback: CSubtitleEngine::~CSubtitleEngine: Finish (0 ms)
1343652: 3248: Playback: CPlayerZone::Stop: Processing internal previous / next
1343652: 3248: Playback: CPlayerZone::Stop: Clearing display info
1343652: 3248: Playback: CPlayerZone::Stop: Updating statistics
1343652: 3248: Database: CDataHolder::Load: Field: Stack Top; Files: 26425; Pointer bytes: 0; Data bytes: 48; Elapsed ms: 0.251
1343652: 3248: Database: CDataHolder::Load: Field: Last Played; Files: 26425; Pointer bytes: 14756; Data bytes: 4168; Elapsed ms: 0.525
1343652: 3248: Playback: CPlayerZone::Stop: Updating playback state
1343652: 3248: Playback: CPlayerZone::Stop: Updating UI
1343652: 3248: Playback: CPlayerZone::Stop: Applying database changes
1343652: 3248: Playback: CPlayerZone::Stop: Finish (795 ms)
1343652: 2536: Playback: CPlayerZoneDisplayInfoUpdateThread::Thread: Start
1343652: 2536: Playback: CPlayerZoneDisplayInfoUpdateThread::Thread: Zone: Player (id: 0)
1343652: 3248: Playback: CPlayerZone::Next: Finish (795 ms)
1343652: 3248: General: CMCUICore::SetMode: Start
1343652: 3248: General: CMCUICore::SetMode: Setting UI mode: -994
1343652: 3248: Database: CMediaFileIOLoad::Load: Loading: C:\Users\user1\AppData\Roaming\J River\Media Center 18\Connected Library\browser (theater view).jmd
1343699: 3248: General: CMCUICore::UpdateScreenResolution: Start
1343699: 3248: General: CMCUICore::UpdateScreenResolution: Default fullscreen settings:
1343699: 3248: General: CMCUICore::UpdateScreenResolution: Changing monitor 65537 settings to:
1343699: 3248: General: JRMonitor::SetDisplayMode: Start
1343699: 3248: General: JRMonitor::SetDisplayMode: Mode 1920x1080x32x60 for device \\.\DISPLAY1
1344729: 3248: General: JRMonitor::SetDisplayMode: Finish (result: 1) (1030 ms)
1344791: 3248: General: CMCUICore::UpdateScreenResolution: Finish (1092 ms)
1344791: 3248: General: CMainUIWnd::Resize: Start
1344791: 3248: General: CDXCore::Initialize: Start
1344791: 3248: General: CDXCore::Initialize: Stopping previous instances
1344791: 3248: General: CDXCore::Terminate: Start
1344791: 3248: General: CDXCore::Terminate: DestroyObjects
1344791: 3248: General: CDXCore::Terminate: Release Direct3D
1344791: 3248: General: CDXCore::Terminate: Unload D3D.dll
1344791: 3248: General: CDXCore::Terminate: Clearing variables
1344791: 3248: General: CDXCore::Terminate: Finish (0 ms)