Elastic 6.4.2 Cannot Load Main Class

In porting from 6.4.1 to 6.4.2 (Windows 10, single node, I7 processor with 16 gig), I have run into the following error exceuting the elasticsearch.bat file

Error: Could not find or load main class org.elasticsearch.bootstrap.Elasticsearch

Was initially using Java JDK version 8, 171, so upgraded to JDK 8,181 and also tried Java 10.02. Same result

Current settings are:
D:\elastic\642\bin>echo %JAVA_HOME%
C:\Program Files\Java\jre1.8.0_181

    java version "1.8.0_181"
    Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
   Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)	

I jave not changed the JVM options for the elastic heap allocation.

The elasticsearch.bat file executes correctly on the 6.4.1 version


False alarm, the data folder was delete. Of course, I did not do it

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