Further information, through testing. The problem seems to be in the relationship between one of the adjustment layers and the text layer.
When the text layer is turned off - no crash
When the adjustment layer is turned off and the text layer is on - no crash
When removing the mask from the adjustment layer and keeping both layers on - no crash
The blend mode of the mask in the adjustment layer is set to Add
The adjustment layer contains a Hue-Saturation effect
What font are you using? What effects are applied to that layer?
Do you mean AE 5.5 or AE CS 5.5 (actually AE version 10.5)? This makes quite a big difference. Also, the exact version number (10.5.1?) would be useful.
I'm using version 10.5.0.253
I have tested two other fonts with the same result.
When changing the blend mode of the adjustment layer mask from Add to Subtract - no crash
So I checked the blend mode of the adjustmernt layer itself and found that it was also set to Add.
I changed the blend mode of the Adjustment layer to Normal, kept the blend mode of the mask to Add, and it does not crash.
Problem solved. Bug ID'd.
Okay, tried to replicate in a fresh project and could not reproduce. Never mind "Bug ID'd".