I have the problems with both SAVIHost v1.43 and VSTHost v1.57 for the case of Dexed 0.9.6. As I am a hobbist only, related to both MIDI and IT, I wish to ask some help to overcome these problems detailed below.
My problem with SAVIHost V1.43:
I copied savihost.exe (extracted from savihost3x64.zip) copied into directory "C:\Program Files\Common Files\VST3" (i.e. into the installation directory of Dexed.vst3) then renamed it to Dexed.exe, and launched this Dexed.exe. I set "loopMIDI Port 1" (created prior by "loopMIDI v1.0.16 (27)") as "Input Port 1" via "Devices|MIDI..." and "1764 samples (25 b/s)" via "Devices|Wave...". (The sample rate was 44100 Hz, and both ports were "MME: Microsoft Sound Mapper). Then I played some sounds by use of the virtual keyboard, and changed Dexed's programs (instruments) randomly - and Dexed seemed to work well, it played the different sounds with the actually selected instruments. Then I sent some MIDI Messages by Cakewalk by Bandlab to "loopMIDI 1"; Dexed produced the appropriate sounds, according to MIDI Note On/Off messages received - except that all the MIDI Program Change messages (C0 xx) were ignored. Finally, when I clicked onto icon of Dexed.exe (i.e. renamed savihost.exe) in the Windows 10 Taskbar on the screen: the main window of Dexed.exe was minimized, but when I clicked onto its icon again, although its main window is restored but crashed immediately. A dialog titled as "Dexed" appered, containing an error message:
Unhandled exception 0xC0000005 at 00000014005BEBA
reading from FFFFFFFFFFFFFFFF
(followed by a list of the recent content of registers).
Furthermore, I noticed that resizing of window of Dexed.exe (moving its bottom edge upward) also causes a crash, but only after when Dexed.exe received some MIDI messages through "loopMIDI Port 1". (i.e. playing on virtual keyboard, followed by similar resizing did not cause crashes - at least, I have not realized that.)
The situation was ditto for the case of SAVIHost V1.44 beta.
Problem with VSTHost V1.56 x64:
In the second case, I started VTSHost.exe, then loaded Dexed.vst3 via File|New Plugin... . Dexed.vst3 also seemed to work well at the beginning, i.e. while I played on the virtual keyboard bar, and changed the programs (instruments) and modified some parameters by the knobs on the screen. But when VSTHost received the first MIDI messages through the "loopMIDI Port 1", Dexed does not played any notes anymore. Instead, some extra message lines appeared in the dialog "Info" below the line "Chained as Insert before 1: Engine Output":
...
Processing is turned off (errors in PlugIn?)
ProcessReplacing
Exception 0xC0000005 at 000000014007ABF6 reading from 0000000000000000
...
Stack Trace:
...
Unfortunately, the situation was the same in case of VSTHost V1.57 beta x64.
Comments:
- Dexed.vst3 worked without problems in case of other VST host apps (e.g. CakeWalk by BandLab and Cantabile 4 Lite), i.e. also the MIDI Program Change messages were executed properly. (CakeWalk by Bandlab used Dexed.vst3 directly, Cantabile 4 Light received MIDI messages from CakeWalk by BandLab through "loopMIDI Port 1".)
- similarly, the original standalone Dexed application also processed the MIDI Program Change messages through "loopMIDI Port 1" correctly.
- version number of Dexed.vst3 reported as 1.0.0 by VSTHost (although is is originated from unzipping of "dexed-0.9.6-win.zip").
- my PC has the followings: -- OS: MS Windows 10, 22H2, build: 19045.2311 (x64) -- CPU: Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz -- RAM: 8 GB -- motherboard: Gigabyte Technology Co., Ltd. B85M-D2V -- sound: Realtek, High Definition Audio (on-board)
Finally, I wish to mention that I have tried other VSTs than Dexed's one with both SAVIHost and VSTHost: "sforzando.vst3" and "Roland Sound Canvas VA.dll". There were no problem at all - no interception of any MIDI Message, no crash, etc -, they had been worked without any problem for hours. So I am not really sure, what and where are the root of the problems above: maybe in SAVIHost or VSTHost - or maybe in Dexed.
I wish ask some help, how I shall continue to determine, which component - ie. savihost/svthost or Dexed - is failed and resulted the problem?
Thank you very much for you kind efforts in advance!
