Ok here's sample of a modded anomaly:
//------------------------------------------------------------------------
ANOMOLY creativity2
//------------------------------------------------------------------------
Title "Creativity2"
Description "Our researchers have discovered the recipe for a new elixir in the memory banks of an ancient space station. Not only does it increase our creativity by 2 percent, it tastes great and is less filling."
Image "Gfx\\Anomaly_Data2.pcx"
Model "2"
Quantity 25
Commoness 4
Power 2.0
Class 1
Type 11
ENDANOMOLY
Title: the name of anomaly
Description: shows up in pop-up when anomaly is discovered
Image: points to graphic file in gfx folder that is used in-game with descrition
Model: this is actual image used on map. Model 2 here being the "multi-colered swirl" model
Quantity: 25 refers to attribute number, which in this case is "creativity"
Commoness: 4 is a number 1-9, 1 being rare and 9 being very common.
Power: 2.0 refers to in the case of player attributes +2.0%
Type: type 11 is "player attribute increase" type of anomaly.
From what I can gather, your problem is probably with the "power" number. If not, please, paste a copy of the anomaly in question, like I did here, so we can look at it.