# Exception when update to ki-shell 0.5.1

**URL:** <https://discuss.kotlinlang.org/t/exception-when-update-to-ki-shell-0-5-1/25119>\
**Category:** Support\
**Created:** [June 29, 2022, 3:39pm UTC](https://discuss.kotlinlang.org/t/exception-when-update-to-ki-shell-0-5-1/25119 "2022-06-29T15:39:28Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![LaurentBerger](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@LaurentBerger](https://discuss.kotlinlang.org/u/LaurentBerger)\
**Post date:** [June 29, 2022, 3:39pm UTC](https://discuss.kotlinlang.org/t/exception-when-update-to-ki-shell-0-5-1/25119/1 "2022-06-29T15:39:28Z")

</div>

Hi,  
I tried to update [ki-shell 0.5.1](https://github.com/Kotlin/kotlin-interactive-shell/releases/tag/v0.5.1) but I have got an error using macOS Monterey or Win64:

```auto
c: > ki.bat
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/jetbrains/kotlinx/ki/shell/KotlinShell has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at java.security.SecureClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.access$100(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

```

Something is wrong in my java installed but I don’t understand what.

---

<div class="post-metadata">

**Author:** ![LaurentBerger](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@LaurentBerger](https://discuss.kotlinlang.org/u/LaurentBerger)\
**Post date:** [June 29, 2022, 4:56pm UTC](https://discuss.kotlinlang.org/t/exception-when-update-to-ki-shell-0-5-1/25119/2 "2022-06-29T16:56:27Z")

</div>

solved I have installed [jdk 18](https://www.oracle.com/java/technologies/downloads/#jdk18-windows)

but an other error now:

```auto
ki-shell 0.5.0/1.7.0
type :h for help
[0] var a = 17
java.lang.IllegalStateException: Unknown outcome
        at org.jetbrains.kotlinx.ki.shell.Shell.handleSuccess(Shell.kt:310)
        at org.jetbrains.kotlinx.ki.shell.Shell.doRun$evalSnippet(Shell.kt:197)
        at org.jetbrains.kotlinx.ki.shell.Shell.doRun(Shell.kt:230)
        at org.jetbrains.kotlinx.ki.shell.KotlinShell.main(KotlinShell.kt:52)

```

---

<div class="post-metadata">

**Author:** ![LaurentBerger](https://avatars.discourse-cdn.com/v4/letter/l/97f17d/32.png) [@LaurentBerger](https://discuss.kotlinlang.org/u/LaurentBerger)\
**Post date:** [June 29, 2022, 6:06pm UTC](https://discuss.kotlinlang.org/t/exception-when-update-to-ki-shell-0-5-1/25119/3 "2022-06-29T18:06:48Z")

</div>

😀Solved using ki-shell 0.5.1 and [jdk 18](https://www.oracle.com/java/technologies/downloads/#jdk18-windows)

```auto
ki-shell 0.5.1/1.7.0
type :h for help
[0] var a = 18
[1] var b = 19
[2] var c = if (a>17) b else 20
[3] println(c)
19

```