Since the first was moved to insufficient information, here a new try:
(old thread - http://forum.square-enix.com/ffxiv/t...tainer-Venture)

ISP:
o2

Type of Internet Connection:
DSL

Internet Connection Speed:
16k

Date & Time:
GMT + 1, 30th march 2014, ~5 pm first appearance, happened on different times and dates, still happening today and now (4th april 2014, ~ 6pm)

Frequency:
always

Character Name:
Xerxes Break

Race:
Hyur M

World:
Phoenix

Class/Level:
Monk/Pugilist Lvl 50

Area and Coordinates:
Area and map coordinates where the issue occurred.

Party or Solo:
Solo and Party (3,4,8 people, different numbers over time)

NPC Name:
Retainer "Cairi".

Monster Name:
None

In-Game Time:
First 5 pm

Steps:
1. I went to a summon bell (first in Ul'dah at the market place, later on different other locations)
2. I summoned my retainer "Cairi"
3. I got the info "Cairi has completed a venture! To claim the fruits of your retainer's labor, select 'view venture report' from the retainer menu."
4. I tried to click "view venture report"
5. Cairi reacted with "Oh, that will be all today? Very well, but promise me you'll come back soon!"
6. she disappeared

7.-XX. I re-summoned her and tried other venture options ("Assign venture", "view retainer attributes and gear", reset retainer class") but she always reacted the same and disappeard.

XX. - XX+1. I went to the NPC "Chachabi" in Ul'dah and tried to release Cairi and make a new retainer, but couldn't release her due to "her having items of mine" or so Chachabi said. I took everything out of Cairis inventory but I guess the weapon I gave her (lvl 1 pugilist weapon) still counts.

I hope you guys can help me this time, I honestly don't know what's more of information I can give you.