Summary

I just tried the latest demo in Max 2018 (has no other extra plugins) in D3D mode. I have all the relevant files installed except the one that was mentioned last (amd_ags_x64.dll).

Same crash as above when clicking the simulation button.

I suspect the problem might be while installing the plugin in different workspaces and something got mixed up, or expected graphics components that depend on specific driver versions.

In my test system it's found in two workspaces and looks different in both.

1. Alt Menu and Toolbar --> it misses the Lucid menu entry but it has the Lucid toolbar. Except thet the popup button descriptions look like noise characters.

2. Main Toolbar  -> has the Lucid menu entry but misses the toolbar.

I had tried it earlier in Max 2017 wit the same results, except that the toolbar button descriptions were the proper ones.

In all cases, the error message was:

Assertion Error Information

File: Private\FlexSettingsObject.cpp

Line: 636

Fuction: Ephere::Plugins::Autodesk::Max::Lucid::FlexSettingsObject::SetDataToLucid

Expression: Assert failed: adapter != nullptr

I hope this pinpoints the error spot.

Please uninstall, redownload, and reinstall it from the website. We made some fixes.

Marsel Khadiyev (Software Developer, EPHERE Inc.)

It doesn't change it for the trial version, but with the last fixed installer all the required files are in place. Maybe it has some specific hardware/driver requirements?

The error is different now though I can't make sense of it. The crash is handled but nothing else happens.

The following shows up in the Maxscript listener (Max 2018 only, I haven't tried another platform). No dump produced and no errors in the Max.log either:

-- MAXScript MacroScript Error Exception:
-- Known system exception
-- ########################################################################
-- Address: 0x9ef0b5c5; nCode: 0x00000000C0000005
-- Desc: EXCEPTION_ACCESS_VIOLATION The thread tried to read from or write to a virtual address for which it does not have the appropriate access.
-- Read of Address: 0x0000000000000000
-- ########################################################################
-- MAXScript callstack:
-- thread data: threadID:9028
-- ------------------------------------------------------
-- [stack level: 0]
-- In codeblock macroScript: Lucid_Lucid_ToggleSandbox; filename: C:\Program Files\Autodesk\3ds Max 2018\scripts\startup\LucidUI.ms; position: 3081; line: 70
-- Locals:
-- Externals:
-- ------------------------------------------------------
-- [stack level: 1]
-- called from top-level
-- ########################################################################
-- C++ callstack:
-- (NvFlexReleaseD3D_x64): (filename not available): NvFlexGetDetailTimers
-- (NvFlexReleaseD3D_x64): (filename not available): NvFlexGetDetailTimers
-- (NvFlexReleaseD3D_x64): (filename not available): NvFlexGetDetailTimers
-- (NvFlexReleaseD3D_x64): (filename not available): NvFlexCreateSolver
-- (Ephere.Plugins.Lucid.FlexAdapte): (filename not available): NvFlexMakeShapeFlags
-- (Ephere.Plugins.Lucid.FlexAdapte): (filename not available): (function-name not available)
-- (Ephere.Plugins.Lucid): (filename not available): SetActivePhysicsStringParameter
-- (Ephere.Plugins.Autodesk.Max.Luc): (filename not available): LibVersion
-- (Ephere.Plugins.Autodesk.Max.Luc): (filename not available): LibVersion
-- (MAXScrpt): (filename not available): Primitive::apply
-- (MAXScrpt): (filename not available): CodeTree::eval
-- (MAXScrpt): (filename not available): clear_error_source_data
-- (MAXScrpt): (filename not available): Primitive::apply
-- (MAXScrpt): (filename not available): CodeTree::eval
-- (MAXScrpt): (filename not available): SourceFileWrapper::eval
-- (MAXScrpt): (filename not available): SourcePositionWrapper::apply_no_alloc_frame
-- (MAXScrpt): (filename not available): MacroEntry::EnableCompiles
-- (MAXScrpt): (filename not available): Listener::set_style
-- (USER32): (filename not available): CreateDialogParamW
-- (USER32): (filename not available): CreateDialogParamW
-- (USER32): (filename not available): CreateDialogParamW
-- (USER32): (filename not available): TranslateMessageEx
-- (USER32): (filename not available): CallWindowProcW
-- (USER32): (filename not available): CallWindowProcW
-- (UIControls): (filename not available): InitializeCustomUI
-- (UIControls): (filename not available): (function-name not available)
-- (USER32): (filename not available): TranslateMessageEx
-- (USER32): (filename not available): TranslateMessage
-- (USER32): (filename not available): IsDialogMessageW
-- (3dsmax): (filename not available): XMLAnimTreeEntry::GetType
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- (clr): (filename not available): LegacyNGenTryEnumerateFusionCache
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- (3dsmax): (filename not available): UtilGfx::kFONT_WIDTH
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- (3dsmax): (filename not available): (function-name not available)
-- ((module-name not available)): (filename not available): (function-name not available)
-- (ViewSystem): (filename not available): MaxGraphics::DeleteViewportViewSetting
-- ((module-name not available)): (filename not available): (function-name not available)
-- (clr): (filename not available): (function-name not available)
-- ########################################################################

There is a single cudart64_80.dll dated 3/29/2017. Is this used even on a non-NVidia system?

I've done that already. I opened one of the sample scenes (FluidWithInitialState_2013) which was set up for Cuda, I changed it to D3D and saved it with another name. I reopened the new file.

I installed Max 2016 since that's what is used in the accompanying video and got a different error.

This time, it throws a Maxscript error on LucidUI.ms.

If I click 'Toggle Lucid Physics' either in the menu or toolbar, the error is on line 70 (if LucidIsStarted() then LucidStop() else LucidStart()).

If I click "Record Time Range" the error is on line 75 (LucidRecordActiveTimeRange()).

If I run the same commands in Maxscript, I get a 'system exception' with no other explanation.

In all of the above, the toolbar's popup descriptions are fine. Only in Max 2018 they look funky.

Could it be some special requirements with .NET?

The scipts and files are in the proper place and I can't imagine what throws it off.

I could try it on another computer at the office in a couple of days but they are all Cuda machines (no Max 2018 either) so it wouldn't help resolving this.

I'll post if I manage to locate where the problem is with this computer.

Thanks Marsel.

Running the commands on their own, gave exception errors.

Nevertheless it just dawned on me,

The change log referred to using the Flex 1.1 libraries for compatibility with old and/or non-Cuda systems.

I looked the SDK up at NVidia and it says:

"Major feature of this release is the introduction of DX11/DX12 support, in addition to default CUDA implementation, so FLEX solver will run across all compatible graphics cards including AMD and Intel ones."

And there's the problem.

The card on the test machine I use is DX9. Somehow Lucid was partially loaded without complaining. Probably it should post a message and refuse to load in cases like mine.

I tried it on another computer (Cuda) and Lucid worked beautifully.

Problem resolved. As for older non-NVidia hardware, I doubt NVidia would support them with a new Flex release. C'est la vie.

Thanks again and sorry to waste your time on a wild goose chase.

I also experience issues when trying the demo. Everything seems t work just fine, until the "saving is disabled in this version" popup appears. After that if I hit the simulate button, Max hangs every time. I can also see that the values in the global settings resets after the popup. I assume that it should be possible to continue to test lucid after the popup box has appeared?

Using max2016 with the latest downloadable stable version of lucid.

Mvh. Martin