Texture Bug with Map After Compile

Hello, so recently I just got back into mapping due to PC problems and I just compiled my map, I made some edits such as replacing all of the CSS textures for the users who don't own or have it mounted. I did not do any building edits this update was based on material changes only.

After compiling I came across odd texture errors and after talking with other level designers and no one really knows what this error is.

I've compiled two times now and the error still occurs, I have packed the textures into the map that didn't work either.

The photos below are just some of the texture bugs, all of the windows that use that material that is on the map have that pink error. Along with tons of other materials.

Original: Casino Floor: https://steamuserimages-a.akamaihd.net/ugc/968726234505910751/E80390753CA3D5AAD9749C68C5605789E8E2533C/ Hotel Windows: https://steamuserimages-a.akamaihd.net/ugc/968726234505910611/73E440F293AE070722322ED14705D3D30BABEE6D/ Hotel Floor: https://steamuserimages-a.akamaihd.net/ugc/968726234505910282/ED5C4A0E996A549E76EE6F970F5D373BAA1BF175/

New: Casino Floor:https://steamuserimages-a.akamaihd.net/ugc/968726234505910866/F652008212D45AD386BAD44DDC94318DC2DF5F2D/ Hotel Windows:https://steamuserimages-a.akamaihd.net/ugc/968726234505910962/97F56F67519DA7E4C2FB6F19FD59D2D8F451174E/ Hotel Floor:https://steamuserimages-a.akamaihd.net/ugc/968726234505911059/416B517434C9F9D677605B7B244BA3157536918C/

If anyone knows a fix to this, that would be awesome!