Texmaker and TeXstudio ⇒ Quick Build freezes after some Edits

[drmCA]

Hi,

Being Latex noob, I can't figure out how to replicate on the command line the execution of pdftex that is used inside Texmaker during Quick Build.

The problem is that I made some changes to my source that compiled just fine. Adding another longtable I caused Quick Build to freeze. I can stop the process fine. Until then it is using lots of CPU, so I know it's running actually.

Any ideas welcome!
Thank you.
drmCA