Bug concerning email

Concering Invite 1.x dev / with statistics and cancel user accounts also installed.

The following message is displayed

user warning: Duplicate entry 'invite_target_role_Koepel_of_regiovertegenwoordi' for key 1 query: INSERT INTO variable (name, value) VALUES ('invite_target_role_Koepel_of_regiovertegenwoordiger', 's:1:\"2\";') in D:\xampp\htdocs\ibindezorg\includes\database.mysql.inc on line 172.

when I select menu - item 'recent log entries'

The log entry mentions:

"Failed sending invitation. / notice''

The issue followed on another problem. Drupal issued an unspecified mentioning of a problem when I changed the max value of invites from 1000 to unlimited for two roles together.

For that problem in the log entry was noted:

Cannot modify header information - headers already sent by (output started at D:\xampp\htdocs\ibindezorg\includes\database.mysql.inc:172) in D:\xampp\htdocs\ibindezorg\includes\common.inc on line 314.

The issue is produced by:
Drupal 5.5 with (amongst others) og 5.4, cck 1.1, mime - mail (with a small patch for the use of Pearl to make possible to send e-mails to an ISP that asks for userid / pw), user roles 2.7, subgroups 3.0