It looks like you are doing all the right things, sorry the instructions we have provided haven't been working for you. I've reset the IDE state on your project and it looks to be working now, but we will need to dig a little deeper to find the root cause. You should be able to start using it again right now, but if you have any issues, please update this post. In the meantime, we will keep investigating.
thanks for your help. Unfortunately I am still unable to access the project. Do you think there is any possibility to retrieve the R Scripts that are attached to the project?