Hi guyz,
I have updated the katalon to 5.6.1.. and at the time of execution there were some error which I am not able to understand, but after the process has ended, I have tried to re-launch the katalon and it didn’t work.. before updation it was working fine. 
when I launch the IDE, it showing popup to view the error log file and the file has error as mentioned below :
!SESSION 2018-08-25 12:44:40.282 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.8.0_102
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86_64
!ENTRY org.eclipse.osgi 4 0 2018-08-25 12:44:40.826
!MESSAGE Bundle reference:file:org.eclipse.equinox.simpleconfigurator_1.1.200.v20160504-1450.jar@1:start not found.
!ENTRY org.eclipse.osgi 4 0 2018-08-25 12:44:40.857
!MESSAGE Application error
!STACK 1
java.lang.IllegalStateException: Unable to acquire application service. Ensure that the org.eclipse.core.runtime bundle is resolved and started (see config.ini).
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:78)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
please help
Thanks!