Ok/Cancel Form not shown anymore

Hello,

I observed an issue regarding the Yes/No Question, that is needed for different use-cases in Dolibarr (delete items, validate proposals, etc.).

The Form is not shown, click on ‘delete’ or ‘validate’, nothing happens, which results in Dolibarr not being usable anymore. 2-3 hours of debugging did not result in a solution, hopefully you have an idea.

Affected versions: 3.5.4, 3.6 (problem is version independant)
Affected Browsers: Chrome/35.0.1916.153, Firefox 18, Chrome/37.0.2062.94 (so problem is browser independant)
System: debian jessie
PHP Version: 5.6.0RC4

The Debug Log of Dolibarr indicates, that the request is processed:
2014-09-01 11:03:39 INFO 10.2.10.92 ExtraFields::fetch_name_optionals_label sql=SELECT rowid,name,label,type,size,elementtype,fieldunique,fieldrequired,param,pos FROM llx_extrafields WHERE entity IN (0,1) AND elementtype = ‘user’ ORDER BY pos
2014-09-01 11:03:39 INFO 10.2.10.92 files.lib.php::dol_dir_list path=/var/lib/dolibarr/documents/facture/(PROV9) types=files recursive=0 filter= excludefilter="(\.meta|preview\.png)$"
2014-09-01 11:03:39 INFO 10.2.10.92 mod_facture_terre::getNextValue sql=SELECT MAX(CAST(SUBSTRING(facnumber FROM 8) AS SIGNED)) as max FROM llx_facture WHERE facnumber LIKE 'FA
___-%’ AND entity = 1
2014-09-01 11:03:39 INFO 10.2.10.92 mod_facture_terre::getNextValue return FA1409-0007
2014-09-01 11:03:39 INFO 10.2.10.92 Facture::hasProductsOrServices we found 0 qualified lines of products/servcies

Maybe the Javascript issues gives a hint?
GET http://10.2.10.100/javascript/jquery-ui/css/smoothness/jquery-ui.min.css facture.php?facid=9&action=valid:12
GET http://10.2.10.100/javascript/jquery-ui/jquery-ui.min.js facture.php?facid=9&action=valid:19
Uncaught ReferenceError: CKEDITOR is not defined ckeditor.js:11
Uncaught TypeError: undefined is not a function lib_head.js:798
Uncaught TypeError: Cannot read property ‘setDefaults’ of undefined datepicker.js.php?lang=en_US:13

Do you have a suggestion or need more information?

SOLVED: I needed to install the debian package ‘libjs-jquery-ui’ to get it working again.