There is a bug in the M1 implementation Matisse4MyEclipse that requires internet access for the NewFormWizard to prepopulate its list of UI types. The issue is due the use of Xerces XML parser that will attempt to load a remote DTD even when XML validation is disabled.
The DTD that is being retrieved is:
<!DOCTYPE filesystem PUBLIC “-//NetBeans//DTD Filesystem 1.0//EN” “http://www.netbeans.org/dtds/filesystem-1_0.dtd”>
This will be fixed in the next release to load a local version from the Matisse4MyEclipse plugin.
Regards,