Stumbled upon this post when trying to use the ULS logger to see an error:
See the blog above for full details but here is a simplified way to get an error:
1. Get correlation id from window
2. in PowerShell (run the following commands):
Merge-SPLogFile -Path “.\error[x].log” -Correlation “85ea729c-071c-d0b1-d6c7-065c6284a50f”
I name my log errorx where x is a number and delete them after I I’m done.
Saves to C:\Users\ [your user name]
3. Open ULS Viewer > Open File and select error[x].log
Way easier than hunting through ULS logs.