The mesh is externally linked to a file that is missing.
Check the directory where you downloaded the file to for any other subfolders or try to redownload the file from wherever you got it.
Sorry, that was sloppy of me not to explain better. I am doing way too much today and need to slow down a little.
So first of all I used a free macroscript called CopyPaste.mcr which I highly recommend that you download :
http://www.scriptspot.com/3ds-max/scripts/3ds-max-copy-paste-objects-between-scenes
The script under the hood is just doing a file merge function between instances of Max and if you watch the video in the link, you will get the idea. For your particular situation, you can also just use the native Max File> Import> Merge function to bring in only the Biped skeleton by selecting only that in the dialog.
Sorry that I did not explain this better initially. Hope this is clear, but post back if you have any questions.
"i followed the video, and installed the MaxScript and yet, i still don't see the "Copy Object" option"
With a maxscript with the .mcr extension, installing the script (either by dragging it into a max viewport or by running it via Scripting Menu > "Run" command) results in an action (or in this case 2 actions) being installed in the list of actions found in the Customize>Customize User Interface dialog list of actions as shown below. You then have to locate the actions you want to place in a Quad Menu (for right click access) by dragging them to the right side portion of the dialog box as shown below. The example below shows that after running the CopyPaste.mcr script, the CopyObjects action and the Paste Objects action can both be found in the Category: MiRi Tools. Drag each action to the right as shown below and they will be then available to you via right click after you close the dialog box.
You can also (or alternatively) add these actions to a custom toolbar or custom menu that you may already created by selecting the "Toolbars" or "Menus" tab in the Customize User Interface dialog box. Or you can hotkey them via the Customize>Hotkey Editor.
In usage of this script, you would first select the objects you want to copy and then right click and then select the CopyObjects option from the Quad menu. Then you switch to the other instance of Max that is running and right click and select PlaceObjects and the objects will be pasted in the same world location as they were in the other max scene. Please note that this script will not work across different versions of Max just like the Import > Merge function will not work across different versions of max. In other words both instances of max must be Max 2020 or Max 2022 or whatever, and copy will not work from max 2022 to max 2019.
One word of advice: Do Not install any macroscript when more than 1 instance of max is running; it may result in any customizations you make to toolbars/Quads/Menus for those actions not being remembered by Max and then you will just have to repeat the process with a single instance of Max running.
"One thing that worked, is that i selected the whole rig, and clicked Export ==> selected"
Yes, for your case, in addition to the Import> Merge function into a new max scene and selecting only the biped skeleton, you can also export to .fbx selected from 1 max scene and then re-import into another max scene. It just takes 2 steps vs 1 step for Import>Merge. Both are useful techniques when you need to extract portions of a scene in a problem Max file.
I hope the above is clear.
