Here is the error
Cannot evaluate expression because a thread is stopped at a point where garbage collection is impossible, possibly because the code
Here's a little trick just in case you want to examine some objects and you are not able to change the parameters:
I've created a call to a new temporary function, inside the function from where I was unable to watch my object. Then, inside that new function I was able to watch my object. After the job is done, just delete the function.