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https://issues.apache.org/jira/browse/NETBEANS-5177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ulrich Mayring updated NETBEANS-5177:
-------------------------------------
    Description: 
I experienced a number of total freezes after installing NB 12.2 (have been 
using 12.0 before), but could not get an error message of any sort, since NB 
was completely unresponsive to keystrokes or mouse. This changed today, I got 
an error popup, which I attach. NB was again totally unresponsive, but I could 
make a screenshot of the popup message.

The black shadow around the error dialog actually is tens or hundreds of the 
same popup windows behind the first one. They keep piling up at CPU speed until 
the app runs out of memory or is killed. For a while I could close a few of 
them, but they kept coming up faster than I could click.

The file in question (see screenshot) looks normal to me. It has the correct 
owner and permissions and its content is this:

count=1000
 MTTF=71985
 uihandler.preferences.writable.check=1608633016127

The crash happened directly after starting the IDE, while it was reading in the 
last project I worked on. No user interaction was involved.

Fedora 29 / KDE.

  was:
I experienced a number of total freezes after installing NB 12.2 (have been 
using 12.0 before), but could not get an error message of any sort, since NB 
was completely unresponsive to keystrokes or mouse. This changed today, I got 
an error popup, which I attach. NB was again totally unresponsive, but I could 
make a screenshot of the popup message.

The black shadow around the error dialog actually is tens or hundreds of the 
same popup windows behind the first one. They keep piling up at CPU speed until 
the app runs out of memory or is killed. For a while I could close a few of 
them, but they kept coming up faster than I could click.

The file in question (see screenshot) looks normal to me. It has the correct 
owner and permissions and its content is this:

count=1000
MTTF=71985
uihandler.preferences.writable.check=1608633016127

The crash happened directly after starting the IDE, while it was reading in the 
last project I worked on. No user interaction was involved.


> Crash: cannot get exclusive access to uihandler.properties
> ----------------------------------------------------------
>
>                 Key: NETBEANS-5177
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-5177
>             Project: NetBeans
>          Issue Type: Bug
>    Affects Versions: 12.2
>            Reporter: Ulrich Mayring
>            Priority: Blocker
>         Attachments: sc.png
>
>
> I experienced a number of total freezes after installing NB 12.2 (have been 
> using 12.0 before), but could not get an error message of any sort, since NB 
> was completely unresponsive to keystrokes or mouse. This changed today, I got 
> an error popup, which I attach. NB was again totally unresponsive, but I 
> could make a screenshot of the popup message.
> The black shadow around the error dialog actually is tens or hundreds of the 
> same popup windows behind the first one. They keep piling up at CPU speed 
> until the app runs out of memory or is killed. For a while I could close a 
> few of them, but they kept coming up faster than I could click.
> The file in question (see screenshot) looks normal to me. It has the correct 
> owner and permissions and its content is this:
> count=1000
>  MTTF=71985
>  uihandler.preferences.writable.check=1608633016127
> The crash happened directly after starting the IDE, while it was reading in 
> the last project I worked on. No user interaction was involved.
> Fedora 29 / KDE.



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