Modifier is not visible in 3dsmax modifier drop-down list 

• Problem: After removing a modifier from the stack or when trying to insert a new modifier in the middle of the modifier stack guide or hair modifiers are not available as an option in 3dsmax drop down.
• Cause: This happens because the object type at the top of the modifier stack is different from the object type at the point where the modifier is being inserted. For example, an Edit Guides modifier might be inserted right below Hair from Guides modifier. Because Hair from Guides modifier outputs hairs and not guides, the Edit Guides modifier will not be available in 3dsmax UI.
• Solution: Temporarily disable all modifiers above the spot where you are trying to insert the new modifier. The modifier will then be available in 3dsmax for adding. After adding the modifier re-enable all of the disabled modifiers.

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