This startup issue that some of you may be experiencing is occurring in a third party application that WireShare uses called icu4j. What I believe is causing it to fail is that the Java revision number is greater than 255. Try uninstalling Java 1.8.0.261 and install Java 1.8.0.251 and report back here if that resolves the issue.

BigJx

Hope you don't mind if I throw in a wildcard possibility. Possibly the icu4j version is outdated to handle some of the newer translations (charset converter coverage ~ that the particular java version can handle.) From that I can ascertain there's constant updates in what unicode icu4j can handle. Java itself has very limited and outdated unicode support.

FYI, I can confirm that the Wireshare startup problem occured after Java JRE was updated from version 1.8.0.251 to version 1.8.0.261. After reverting to Java 1.8.0.251 (32-bit version), Wireshare starts again. Tested with Wireshare 5.6.6 and 6.0.0.

It would be appreciated if an updated version of Wireshare can be made available that works with Java 1.8.0.261 and later.