No, it's not your problem. I am at fault, after all its worked several times for others.
Anyways, somewhat the same issue.
] host_framerate 1500
] startmovie srcdemo/name_
Started recording movie, frames will record after console is cleared...
] playdemo name
Browser Message: Uncaught ReferenceError: SetStatusChanged is not defined - :0Playing demo from name.dem.
Lua initialized (Lua 5.1)
> SharpeYe is in normal mode. Now querying Version.
Registering gamemode 'sandbox' derived from 'base'
Sending 268 'User Info' ConVars to server (cl_spewuserinfoconvars to see)
Scanning for downloaded fonts..
Could not find table "downloadables"
Could not find table "modelprecache"
Could not find table "genericprecache"
Could not find table "soundprecache"
Could not find table "decalprecache"
Could not find table "instancebaseline"
Could not find table "lightstyles"
Could not find table "userinfo"
Could not find table "DynamicModels"
Could not find table "server_query_info"
Could not find table "ParticleEffectNames"
Could not find table "EffectDispatch"
Could not find table "VguiScreen"
Could not find table "Materials"
Could not find table "InfoPanel"
Could not find table "Scenes"
Could not find table "ServerMapCycle"
Could not find table "GameRulesCreation"
Could not find table "OgfGiyegPNbFOf"
Could not find table "pfhremThHuasw"
Could not find table "FiifuvFjTSoiLjgH"
Redownloading all lightmaps
Couldn't write movie snapshot to file srcdemo/name_0000.tga.
If Dokan is doing something wrong, srcdemo will tell you, right? Should be the same with Java, if they don't work the thing just won't run. If it just won't mount...
I've tried running it in admin mode, everything...if what I entered in the console is correct, and this:

is correct, I guess it's time to call it a day.
However, judging by other's videos, the program is excellent! If it can't be solved, thanks for your effort anyways.