Although, I don't know about this resource, yes, I think you could do that too. But, if rotation is a vector of type VectorF/Point3F, then you would have to pass each value of the vector (rotation.x, rotation.y, rotation.z) individually as a float.
Double click on the error and post the line of code that the Debugger will highlight.
I have a feeling that there is a syntax error on how a variable in the engineTypes.h file is declared; or, it could be that there is a missing } somewhere.
I don't recommend this software for exporting to DTS. Even the author admits that its DTS exporter is very rudimentary. It only supports one level of detail and some exported characters will make Torque crash. For DTS I recommend Milkshape and its DTSPlus exporter. The DAE exporter is quite good for...