i just tried to rename a property in a project which uses conditional compiles. The rename fails for occurences inside an active conditional block. I'm working with VB and Visual Studio 2010. Here is a sample:
#If MyCondition Then
myVariable = myPropertyToReanme
In the project properties myCondition is defined in the custom constants as "myCondition=-1" and the block will be compiled. R# seems to ignore the conditional blocks.