Anomaly is a standalone S.T.A.L.K.E.R. mod powered by an x64 version of the X-Ray engine. Starting with version 1.5.0 Anomaly uses a custom engine build called the XRay-Monolith engine. After almost one year of development of the Anomaly 1.5.0 update, the mod continues its way on expanding and adding new features while maintaining a high level of quality and replay value.
Fix for 1.4.0 Exoskeletons helmets bug that lowers exo protection
Developers shows that is fixed in future 1.5.0, but until is released, you can use this.
Is a bug that affects helmet protection to Exoskeletons, lowering it because helmet armor is not configured correctly in the files.
In my opinion is a bit annoying so I checked the forum post and search the file where is fixed in 1.5.0. That's the only change so, here is.
Explained at: Moddb.com