Using certain materials in Cascade corrupts them HELP

Hello, i used to be in UE4 version 4.10 and transferred to 4.12, since then i got some work done and now when i am trying to use a material that i made with cascade it doesn’t work and it sort of corrupts the original material, it no longer shows the original material but it shows this neutral gray matter as if it’s just nothing

and i noticed now that a former particle i had used is also affected by this and i tested it on 4.10 and 4.11 it doesn’t work on 4.12 only the same way as the new material i made

Just as a test, in the usage section inside the material make sure that “Used with particles” is checked.