MinimServer 2.2 - java.lang.StringIndexOutOfBoundsException: String index out of rang

[primouomo]

I cannot even start the server, please see the error log below. I am on Win 10 and I had been using MinimServer for years and never had a blocker issue like this one.

Warning: conflicting ALBUM ARTIST values ignored for file classical/RCA LIVING STEREO/25 Brahms, Tchaikovsky/06. Tchaikovsky - Violin Concerto In D Op. 35 - 1. Allegro Vivacissimo.flac
first conflicting value: Jascha Heifetz
second conflicting value: Fritz Reiner
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(Unknown Source)
at com.minimserver.Server$CachedAudioItem.readData(Server.java:20609)
at com.minimserver.Server.readMetadata(Server.java:11568)
at com.minimserver.Server.access$15400(Server.java:185)
at com.minimserver.Server$Directory.postVisit(Server.java:17646)
at com.minimserver.Server$Visitor.postVisitDirectory(Server.java:18067)
at com.minimserver.Server$Visitor.postVisitDirectory(Server.java:17930)
at java.nio.file.Files.walkFileTree(Unknown Source)
at java.nio.file.Files.walkFileTree(Unknown Source)
at com.minimserver.Server.readFiles(Server.java:8778)
at com.minimserver.Server.doStart(Server.java:3846)
at com.minimserver.Server.start(Server.java:1407)
at org.jminim.core.ContextImpl.startComponent(ContextImpl.java:204)
at org.jminim.core.ContextImpl.start(ContextImpl.java:129)
at org.jminim.core.RuntimeImpl.run(RuntimeImpl.java:2793)
at org.jminim.core.LauncherImpl.run(LauncherImpl.java:1317)
at org.jminim.core.LauncherImpl.launch(LauncherImpl.java:125)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jminim.mlaunch.MinimLaunch.doLaunch(MinimLaunch.java:525)
at org.jminim.mlaunch.MinimLaunch.launch(MinimLaunch.java:150)
at org.jminim.mlaunch.MinimLaunch.launch(MinimLaunch.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jminim.launch.Launcher.launch(Launcher.java:88)
at com.minimserver.launch.LaunchServer.main(LaunchServer.java:38)