Could you please check if anything is logged in event viewer. Any such issue was not reported.
Additionally, uninstall and install fresh UiPath studio V18.4.2.
Where is the event viewer?
Go to run and type eventvwr, in event viewer check application logs.
Yes, you are right. Open the log and check what is the error description.
I also see that the web Recording in 2018.4 is not as described in the video shown in academy, I’m not able to get the input text option that comes on Basic and Desktop recording as shown in 2018.3 academy video
May this is a bug
Could you post a screenshot of your Package Manager? I would suggest updating all packages to their most recent versions.