Federico
Ansys Employee

Hello,

RPC is a Remote Procedure Call. Which version of Fluent are you using? Do you get the following messages in the Console before those that you are showing?

To avoid getting these messages, please try the following:

Open the Ansys installation folder.
~/.ansys/v231/ApipUserConfig.txt 
(Here, replace 231 with an appropriate value)
Verify that the following lines are included:
ANSYSProductImprovementProgram=off