How to repair [warning] Could not validate?

Hello,
i created my own object in blender. Export in to .dff file and make colision and save id. Everithing OK bud when i connect in game this show:

[23:03:04] [warning] Could not validate 0xF6ACD570.dff. Error(44014:0x0) Deleting..
[23:03:04] [warning] Could not validate 0xD11B2D9F.dff. Error(44014:0x0) Deleting..

How to repair?

Thanks for help.