After a lot of misterious problems with jdownloads after upgrade from old version i decided to do a clean install. removed every mention of jdownloads from database and started fresh.
Upon install i got this error:
JInstaller: :Installeren: Fout SQL Table 'tltest_schaken.#__jdownloads_usergroups_limits' doesn't exist
Extensie Update: SQL fout verwerken zoekopdracht: DB functie is mislukt met het volgende foutnummer 1146
Table 'tltest_schaken.#__jdownloads_usergroups_limits' doesn't exist
SQL =
ALTER TABLE `#__jdownloads_usergroups_limits` ADD `importance` SMALLINT( 6 ) NOT NULL DEFAULT '0' AFTER `id`;