This post was last modified: 2023-04-22, 14:09 by Gunther.

Hi all,
I Installed LRTimelapse 6.3.0 on a Windows 11 computer and the software is not starting.

I launched the .cmd file and got the following error:

Code:

Exception in thread "main" java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge
    at java.desktop/java.awt.Toolkit.newAWTError(Unknown Source)
    at java.desktop/java.awt.Toolkit.fallbackToLoadClassForAT(Unknown Source)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source)
    at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
    at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(Unknown Source)
    at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
    at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source)
    at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
    at java.base/java.util.stream.ReferencePipeline.forEach(Unknown Source)
    at java.desktop/java.awt.Toolkit.loadAssistiveTechnologies(Unknown Source)
    at java.desktop/java.awt.Toolkit.getDefaultToolkit(Unknown Source)
    at java.desktop/javax.swing.UIManager.<clinit>(Unknown Source)
    at java.desktop/javax.swing.filechooser.WindowsFileSystemView.<clinit>(Unknown Source)
    at java.desktop/javax.swing.filechooser.FileSystemView.getFileSystemView(Unknown Source)
    at lrtimelapse.LRTimelapseMain.<clinit>(fbc:114)
    at lrtimelapse.LRTimelapseApp.main(ncc:113)
Caused by: java.lang.ClassNotFoundException: com.sun.java.accessibility.AccessBridge
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
    at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
    at java.base/java.lang.Class.forName0(Native Method)
    at java.base/java.lang.Class.forName(Unknown Source)
    at java.base/java.lang.Class.forName(Unknown Source)
    ... 17 more

The software is not writting the log as it ussually does on the user's folder.

any idea about how to fix the problem?

Thanks

This post was last modified: 2023-08-15, 13:36 by Gunther.

Update: Fixed in LRTimelapse >= 6.5.2 beta 3, see next post.

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It seems that there might be a java configuration file on your computer (most likely from the old Java install) which forces Java to look for a Library for Assistive Technology, which is not there in the latest LRTimelapse versions, because it is normally not needed by LRTimelapse. Although LRTimelapse embeds it's own Java, this configuration file might still be evaluated if present.

Please completely uninstall that old Java 8. Then also check your user folder for a file named
C:\Users\current_user\.accessibility.properties
it's normally hidden, so best use a terminal to delete it:

Code:

del .accessibility.properties

You might also do a deep search on your C: harddrive for that file and delete it.

For reference see https://stackoverflow.com/questions/1526...-not-found

If this doesn't help, there is another thing, you can try:

Edit the cmd file that you already used to launch LRTimelapse (C:\Program Files\LRTimelapse 6\LRTimelapse.cmd

Replace the launch line:

Code:

"%java_path%java.exe" -Djna.nosys=true -Xms%memory_usage_min% -Xmx%memory_usage_max% -jar LRTimelapse.jar

Replace with:

Code:

"%java_path%java.exe" -Djna.nosys=true -Xms%memory_usage_min% -Xmx%memory_usage_max% -Djavax.accessibility.assistive_technologies=" " -jar LRTimelapse.jar

Launch the modified CMD.

Let me know, which solution helped.

I've worked around the "Assistive Technology not found" error that could happen on very few systems in LRTimelapse 6.5.2 beta 3. Please test and let me know: https://lrtimelapse.com/download/beta