Flatiron for 3ds Max

Troubleshooting

This section covers common issues when working with Flatiron, along with practical solutions.

⚡ Quick Diagnostic Flow

Use this quick guide to identify and fix the most common issues in seconds.

🖤 If your baked texture is completely black

👉 Use renderer-specific bake elements → For V-Ray: use V-Ray render elements, not default ones

🌑 If your textures are too dark or have wrong colors

👉 Check gamma settings → Set bitmap gamma to 1.0 or disable gamma correction

⚠️ If Single Pass baking gives incorrect results

👉 Switch baking mode → Use Multi Pass instead

📏 If UVs look stretched or incorrectly scaled

👉 Reset object transforms → Use Utilities → Reset XForm

🎥 If baked result differs from V-Ray render

👉 Check render settings → Disable VFB color corrections → Avoid Light Cache → Use Irradiance Map or Brute Force

🌐 If network render does not merge textures

👉 Check connection / workflow → Use Manual Merge after rendering is complete

🧩 If UV packing does not behave as expected

👉 Check workflow → Collapse modifiers before using Pack Existing

💡 Tip

If your issue is not listed here, scroll down to the full troubleshooting section for detailed explanations.

🎨 Baking & Rendering

🔥 Baked texture is completely black

❌ Problem

The baked result is completely black.

💡 Solution

Check your bake element compatibility:

V-Ray → use V-Ray render elements
Default Scanline/Mental Ray elements will not work with V-Ray

⚠️ Incorrect results with Single Pass baking

❌ Problem

Single Pass baking produces unexpected results.

💡 Solution

Try switching to Multi Pass:

Single Pass → faster
Multi Pass → more stable for complex scenes

⚠️ Baked textures are too dark or incorrect in color

❌ Problem

Textures look too dark or colors are wrong.

💡 Solution

Gamma settings are incorrect:

Set bitmap gamma to 1.0
Or disable gamma correction in 3ds Max

⚠️ V-Ray bake differs from final render

❌ Problem

Baked result does not match V-Ray render.

💡 Solution

Disable V-Ray Frame Buffer color corrections
Avoid Light Cache

Use instead:

Irradiance Map
or Brute Force

🧱 UV & Geometry

⚠️ Objects are unwrapped with wrong proportions

❌ Problem

UVs appear scaled incorrectly.

💡 Solution

Select objects
Go to Utilities → Reset XForm

This fixes incorrect scaling from imported assets.

ℹ️ How to pack existing UVs

❓ Question

How do I repack existing UVs?

💡 Solution

Collapse UV modifiers
Ensure UVs are finalized
Use Pack Existing

👉 Only original UVs are packed (not newly generated ones)

🌐 Network Rendering

⚠️ Network render does not merge automatically

❌ Problem

Textures are not merged after rendering.

💡 Solution

Flatiron lost connection to Backburner.

Fix:

Use Manual Merge after job completion

⚙️ Compatibility

ℹ️ Supported 3ds Max versions

💡 Answer

Supported: 3ds Max 2015 → current

ℹ️ Supported renderers

💡 Answer

V-Ray
Corona
Redshift
Mental Ray
Final Render
Scanline

ℹ️ Unreal Engine / Unity compatibility

💡 Answer

Fully compatible with all modern real-time engines.

ℹ️ Multiple render elements baking

💡 Answer

Yes — Flatiron supports multiple render elements just like 3ds Max.

🔐 Licensing

ℹ️ Using Flatiron on multiple computers

💡 Answer

Install on multiple machines
Activate on one at a time

ℹ️ Moving license to another computer

💡 Solution

Deactivate on old machine
Activate on new one

ℹ️ Updating older licenses

💡 Answer

All licenses are permanent and include updates.

ℹ️ Switching from Unwrella / UV-Packer

💡 Answer

License upgrades are possible — contact support.

ℹ️ Educational licenses

💡 Answer

Available for:

students
universities
educators

🆘 Need More Help?

If your issue is not listed here:

Check the documentation
Contact support

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