REAPER hangs with full CPU load while opening specific plugin

Hello. I have project with several tracks and several VST and VSTi on them. I try to create one more track and insert Absynth 4 plugin on it (or insert to existing track – doesn’t matters), and while inserting - REAPER hangs with 100% CPU load. I wait quite long – about 5 minutes, no effect – still hangs and CPU load. I tried v2.58 and v3.alpha.1 (2.9.9.0 in file's version info), tried to load both VST and VSTi version on Absynth plugin, tried to reinstall Absynth – no success. If create new project and insert Absynth there – it works normally, also stand-alone Absynth works fine. Can I turn on debug logging somewhere, to see what's happens while Absynth plugin loading?

I reproduced situation, and there is no records about REAPED added to Event Log. This is not surprising, because program not crahes, but only hangs - stops responding on user's actions and takes 100% CPU. Information for developers: I attached with debugger to REAPER, and figured out, that Absynth plugin fell into an infinite loop in DllMain function of Absynth4.dll. It seems that REAPER loads Absynth4 Stereo.dll as plugin, which in turn loads the Absynt4.dll with LoadLibrary. This is all in main thread, others are waiting on synchronization objects. Call stack: > Absynth4.dll!316c75a1() [Frames below may be incorrect and/or missing, no symbols loaded for Absynth4.dll] Absynth4.dll!3169af0a() ntdll.dll!_LdrpCallInitRoutine@16() + 0x14 bytes ntdll.dll!_LdrpRunInitializeRoutines@4() - 0x384 bytes ntdll.dll!_LdrpLoadDll@24() + 0xb842 bytes ntdll.dll!_LdrLoadDll@16() + 0x102 bytes kernel32.dll!_LoadLibraryExW@12() + 0xe7 bytes kernel32.dll!_LoadLibraryExA@12() + 0x1f bytes kernel32.dll!_LoadLibraryA@4() + 0x2c bytes Absynth4 Stereo.dll!0e9910dd() reaper.exe!004d004c() Absynth stuck on this 3 lines: 316C759B xchg eax,dword ptr [ebp+777157Eh] 316C75A1 or eax,eax 316C75A3 jne 316C759B eax always equals 1. ebp+777157Eh points to 0x316C7592 address. Strange behavior, it seems, that plugin is waiting for something in another thread, but others threads are waiting on synchronization objects There is no direct fault of the REAPER, but on empty project and standalone version of Absynth works fine... Hope this information was useful. P.S. excuse my poor English :)

New info: Problem remains in just released Reaper v3. But I managed to successfully insert Absynth 4 plugin, after removing Battery 3 plugin from another track. I even successfully insert back Battery 3 plugins, but after saving the project and trying load it - Reaper hangs again on loading Absynth plugin. I created new project and inserted both Absynth and Battery plugins in it – all works fine including save/load. P.S. is anybody interested in this thread or I waste the time? ;)

I managed to insert Absynth and Battery plugins in problem project. To do this, I had to delete two VST plugins: Izotope Vinyl and Hypercyclic, for all that I have 2 more working Hypercyclic plugins on the other tracks. It seems that Reaper works very unstable with VST plugins. So sad :(