Since MyM server has some limitations (RFTools dimensions disabled, explosions and fire disabled), and has server-side recipes for the stuff instead, it would be nice to have recipes in client-side NEI as well. 1. Compressed Iron: 1 TNT + 1 Iron, or 1 TNT + 8 Iron 2. Dimensional Shards: ??? Also, I've seen NEI addon(s) for following in other modpacks, but not in PO2 3. Skystone block: Skystone Dust into Stone Barrel with Lava 4. Dirt: any plants into Barrel 5. Clay: Dust into Barrel with Water 6. Soulsand: Sand into Barrel with Witchwater
About the NEI addons, we can't modify the pack (only in last resource). You can always try request to modpack developer or add them your self (not sure if it would work but you can always try, you might need to request on forum to whitelist the mod)
This is caused by the FTB mods, I disabled all of them. Recipes should show up with the next restart.