WebSphere Portal 8. EJPFD0050W: An exception occurred while checking installation history, no information about interim fixes and fix packs is available!

After installing WebSphere Portal 8 I've got the message: 

[7/28/14 13:30:00:488 MSK] 00000019 ProductServic W com.ibm.wps.services.product.ProductServiceImpl init EJPFD0050W: An exception occurred while checking installation history, no information about interim fixes and fix packs is available!

FileNet 5 ConfigMgr does not start on RedHat 6

After installing FN Content Engine (5.2 in my case) you want to run configmgr.
But it does not run without any errors.
Go to /root/configmgr_workspace/.metadata/.log and look at:

java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
 /ibm/fnce52/ContentEngine/tools/configure/configuration/org.eclipse.osgi/bundles/93/1/.cp/libswt-pi-gtk-3740.so (libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory)
 swt-pi-gtk (Not found in java.library.path)
 /root/.swt/lib/linux/x86/libswt-pi-gtk-3740.so (libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory)
 /root/.swt/lib/linux/x86/libswt-pi-gtk.so (/root/.swt/lib/linux/x86/liblibswt-pi-gtk.so.so: cannot open shared object file: No such file or directory)

You need BPMConfig properties file for your 8.5 environment. What to do?

Tell you the truth, I don't use BPMConfig functionality for deploying of BPM 8.5 usually.
I don't like fill this big list of various settings, my eyes flounder in these small letters and so on.
I use old good PMT for this.
But, sometimes, the file of BPMConfig properties is needed.

There are a lot of situations for this. For example, you can start/stop your environment using only one command.
During a Deployment Environment creation the file bpmconfig-<DEName>-<datetime>.properties is created in the folder <WAS_ROOT>/logs/config. But, if you have deleted the file, what to do?