I have been using Intellij for many years. Today I uninstalled previous version and installed 2020.3. I can't open it. I tried to run it from the command line as suggested by another post. I got this error, even though my min heap size IS smaller than the max heap size:
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
Error occurred during initialization of VM
Initial heap size set to a larger value than the maximum heap size
This is my idea64.exe.vmoptions --