#952 OmegaT.exe will not launch after updating to 4.2.0

[Aaron Madlon-Kay]

When upgrading an existing Windows with-JRE installation to 4.2.0 (also with JRE), the resulting JRE breaks, preventing launching with OmegaT.exe.

When executing jre/bin/java.exe in a broken installation, the following error is given:

Error occurred during initialization of VM
java.lang.UnsatisfiedLinkError: java.io.FileInputStream.available0()I
    at java.io.FileInputStream.available0(Native Method)
    at java.io.FileInputStream.available(FileInputStream.java:306)
    at sun.nio.cs.StreamDecoder.inReady(StreamDecoder.java:363)
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:324)
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
    at java.io.InputStreamReader.read(InputStreamReader.java:184)
    at java.io.BufferedReader.fill(BufferedReader.java:161)
    at java.io.BufferedReader.readLine(BufferedReader.java:324)
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
    at sun.misc.MetaIndex.registerDirectory(MetaIndex.java:177)
    at sun.misc.Launcher$ExtClassLoader$1.run(Launcher.java:154)
    at sun.misc.Launcher$ExtClassLoader$1.run(Launcher.java:149)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.misc.Launcher$ExtClassLoader.createExtClassLoader(Launcher.java:148)
    at sun.misc.Launcher$ExtClassLoader.getExtClassLoader(Launcher.java:135)
    at sun.misc.Launcher.<init>(Launcher.java:68)
    at sun.misc.Launcher.<clinit>(Launcher.java:54)
    at java.lang.ClassLoader.initSystemClassLoader(ClassLoader.java:1451)
    at java.lang.ClassLoader.getSystemClassLoader(ClassLoader.java:1436)

Attached are results of executing dir /s . inside C:\Program Files (x86)\OmegaT for

1. A clean installation of 4.1.5_04
2. A clean installation of 4.2.0
3. A clean installation of 4.1.5_04 upgraded to 4.2.0

To function properly, the JRE files in #2 and #3 should be the same, but in many cases they differ in file size and even in the presence of some files (the upgraded installation has files not present in the clean installation).

[Aaron Madlon-Kay]

This is fixed by adding a pre-install step to delete the jre directory; see [515492].

Setup Log 2019-07-01 *.txt are install logs (generated by running the installer with the /LOG switch) from installing 4.1.5_04, 4.2.0, 4.3.0, 5.0.0 in sequence on top of each other. Note the entries Deleting existing C:\Program Files (x86)\OmegaT/* ... Success.

Using an updated installer (nightly or otherwise) to upgrade an existing installation will fix it if it was broken (by replacing the bad jre directory with a good one).

[Aaron Madlon-Kay]

Released in 4.3.0.