I can't get SQL Developer 19.1 started. I've downloaded with, and without the included JDK. And I've tried separate installs of JDK 32 bit and 64, these two versions specifically:
jdk-12.0.2_windows-x64_bin.exe
jdk-8u221-windows-i586.exe
I've reset java_home and the path environment variables for each install.
I've tried deleting the entire sqldeveloper directory, and subdirectories from here, and watched them be recreated...
C:\Users\VHASLCMartiS\AppData\Roaming\sqldeveloper\19.1.0
I'm on windows 7.