# Treeviewer doesn't load in Firefox

**URL:** <http://archive.mpi.nl/forums/t/treeviewer-doesnt-load-in-firefox/2182>\
**Category:** Lamus\
**Created:** [9 December 2015 13:10 UTC](http://archive.mpi.nl/forums/t/treeviewer-doesnt-load-in-firefox/2182 "2015-12-09T13:10:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](http://archive.mpi.nl/forums/uploads/default/original/1X/6598208d1bd4277f5b804bc35738b7ec56827281.png) [@system](http://archive.mpi.nl/forums/u/system)\
**Post date:** [9 December 2015 13:10 UTC](http://archive.mpi.nl/forums/t/treeviewer-doesnt-load-in-firefox/2182/1 "2015-12-09T13:10:26Z")

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Dear TLA team,

I’m using the latest version of Mozilla Firefox under Windows 7. When trying to load the treeviewer, I get the following error message:

"Incompatible magic value 1008813135 in class file lams/applets/treeviewer/IngestNodeSelectionTreeviewer

Is there any help or bug fix available for this? If not, what else can I do to access the DoBeS corpus?

Thanks in advance,

Friederike

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**Author:** ![tla\_admin](http://archive.mpi.nl/forums/user_avatar/archive.mpi.nl/tla_admin/32/152_2.png) [@tla\_admin](http://archive.mpi.nl/forums/u/tla_admin)\
**Post date:** [24 February 2020 14:14 UTC](http://archive.mpi.nl/forums/t/treeviewer-doesnt-load-in-firefox/2182/2 "2020-02-24T14:14:36Z")

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