Moho Pro Main Errors – Solution

Moho Pro is a powerful 2D animation tool known for its vector rigging and bone dynamics, but like any complex software on Windows 10 and 11, it can encounter performance hiccups or installation blocks. These errors often stem from GPU driver conflicts, missing Windows libraries (DLLs), or strict permission settings that prevent the software from saving essential configuration files. This guide covers the most current solutions for Moho Pro 14 and recent versions, helping you resolve crashes, activation loops, and rendering failures quickly.

Common Errors

• Startup Error msvcr100.dll: A missing Visual C++ library prevents the software from launching.
• Activation Failed / Write Error: The software cannot save your license key due to Windows permission restrictions.
• Export Error "Can't encode H.265": GPU incompatibility preventing direct video export.
• Audio Sync Drift: Sound lags behind animation in the final rendered video file.
• Viewport Glitching/Ghosting: Visual artifacts caused by the "GPU Caching" setting.

Fix 1: Startup Crash (Missing DLL or Corrupt Prefs)

If Moho refuses to start or crashes immediately, it is usually due to a missing Microsoft library or a corrupted preferences file from a previous session.

1. Download and install the Visual C++ Redistributable for Visual Studio 2015-2022 (both x86 and x64 versions) from the official Microsoft site.
2. If the crash persists, reset your user preferences. Press Win + R and type %appdata%.
3. Navigate to RoamingLost MarbleMoho Pro14 (or your specific version).
4. Delete the file named Moho Pro.user.settings (or move it to your desktop as a backup).
5. Restart Moho to force it to generate fresh configuration files.

Fix 2: Activation Failed (License Write Error)

This error occurs when Windows security prevents Moho from writing your serial number to the hidden ProgramData folder. You might see a message saying "Your serial number could not be saved."

1. Close Moho completely.
2. Right-click the Moho shortcut on your desktop or Start menu and select Run as administrator.
3. Enter your serial number again when prompted; the elevated privileges should allow the file to save.
4. If that fails, navigate manually to C:ProgramDataLost MarbleMoho.
5. Right-click the folder, select Properties > Security, and ensure your user account has Full Control checked.

Fix 3: Export Failed ("Can't encode H.265")

Moho 14 relies heavily on your hardware for video encoding. If you receive an H.265 or generic MP4 export error, your GPU drivers may be incompatible with Moho's encoder.

1. The Best Fix: Stop exporting directly to MP4. Instead, choose File > Export Animation and select PNG Sequence.
2. Create a dedicated folder for the output and run the export. This creates a lossless sequence of images.
3. Import this image sequence into a video editor (like Premiere, DaVinci Resolve, or simpler free tools) to add audio and render the final video.
4. If you must export video directly from Moho, try changing the format to Motion JPEG (AVI) in the export settings, which is less taxing on the GPU.

Fix 4: Audio Sync Drift

Users often report that audio gradually falls out of sync with the animation in exported video files. This is typically a frame rate mismatch or variable bitrate issue.

1. Check your Project Settings (Ctrl + Shift + P) and note the Frame Rate (e.g., 24 fps).
2. Ensure your imported audio file is a high-quality WAV (44.1kHz, 16-bit), not an MP3. MP3 compression often causes timing errors in animation software.
3. When exporting, ensure the output frame rate matches your project frame rate exactly.
4. For perfect sync, use the PNG Sequence method described in Fix 3 and combine audio and video in an external editor.

Fix 5: Viewport Glitching or "Ghosting"

In Moho 14, the old "GPU Acceleration" was updated to "GPU Caching." While this improves performance, it can cause visual artifacts where vectors disappear or leave ghost trails.

1. Look at the bottom-right corner of the Moho workspace for the Display Quality popup menu.
2. Uncheck GPU Caching (or GPU Acceleration in older versions).
3. If the lag persists, open the same menu and uncheck Antialiasing and Strokes while working.
4. Update your graphics card drivers (NVIDIA/AMD) to the latest "Studio" version rather than "Game Ready" drivers for better stability.

Prevention Tips

• Use Image Sequences: Avoid rendering straight to movie files (MP4/AVI). If the render crashes at frame 900 of 1000, a movie file is lost completely, but an image sequence allows you to resume from frame 901.
• Disable Auto-Save during heavy renders: Sometimes the auto-save function conflicts with complex rendering tasks.
• Keep Audio Uncompressed: Always convert MP3s to WAV files before importing them into Moho to prevent drift and scrubbing lag.

When to Contact Support

If you encounter repeatable crashes that persist after resetting preferences and updating drivers, you may need official help. Before contacting Lost Marble support, locate your crash logs in C:Users[Username]AppDataRoamingLost MarbleMoho Pro14Log.txt and have your exact OS build version ready.