Sup Six0spades (just know ur lurking), regs... been goner for a while (vacation) and just got back to my bgII guesting to find out either Cern is a punk or I got a glitch (yeah it's me with the i might have a glitch thing again).

Goes like this... (told ya dont even peek... y i oughtta)
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I met cern at the druid grove like he said, and after all hell with the trolls I find him. I told him to join us (thats again, I told him before and he left talking about some apples...) and he keeps saying yeah lets get busy [I'm paraphrasing here.. he actually said okay were stronger lets go.. or something like that]but he always joins for a few seconds and then talks about the apples and says he'll wait here for me...

What gives? is it a glitch or he says he wants to come and backs out?

I hold druids to a somewhat high moral standard. Not as high as paladins, kind of like lower clergy. Not only is Cernd a coward,,, he is also pretty much a scumbag. As soon as I found out what he did to his woman, I dumped him.

It sounds like a bug. Do you have any patches?

I think what he is trying to say is that hes is trying to leave the Druid Grove, and IIRC Cernd will not leave until you kill Faldorn.

There's a chance that your Reputation is either really high or really low, and perhaps Cernd will only stick around for a few seconds before he notices what goody-two-shoes or foul evildoers you are before he leaves again? You'd think that BioWare would have disabled that part of his personality while Faldorn's still alive, but given what we know of BioWare, they probably forgot that safety catch.

All neutral characters will stay no-matter what. Its only good and evil that will leave depending on alignment.

If you haven't killed Faldorn then that is probably why, if not.. I have no idea, although Cernd does have some personal quests he must do or he leaves ( but I think he leaves for good ).

Ah yes, thank you. Neutral characters will only leave (for Reputation reasons) if the party's Rep hits 1. But I think that if your Rep was 1, you'd have noticed strange things happening before now, so I think it's safe to assume that you have a bug, and a weird one too.

Cernd does have a personal quest, but it cannot trigger until Faldorn is dead (I'm 90% sure), and though he does leave the party as a result of it, you can just go get him right back again.

Well my reputation was like 18-19 at the time and virture 18 so maybe thats it. But Cern would join then in like a fraction of a second leave the party with no excuses besides saying something about "dont throw away the apple while its green". Even after killing Fallon when i talked to him and asked him to join he says yes, then does same thing.

And yes I do have mods... the following:

// Log of Currently Installed WeiDU Mods
// The top of the file is the 'oldest' mod
// ~TP2_File~ #language_number #component_number // Component Name
~SETUP-ITEMUPGRADE.TP2~ #0 #0 // Shadows Of Amn Item Upgrades
~SETUP-ITEMUPGRADE.TP2~ #0 #1 // Throne Of Bhaal Item Upgrades
~SETUP-EASE.TP2~ #0 #0 // Infinite Weapon, Potion and Ring/Amulet Stacking
~SETUP-EASE.TP2~ #0 #2 // Multi-Class Grand Mastery
~SETUP-EASE.TP2~ #0 #3 // True Grand Mastery (extra half-attack, etc.) (Baldurdash)
~SETUP-EASE.TP2~ #0 #4 // Shut Up "You Must Gather Your Party Before Venturing Forth"
~SETUP-EASE.TP2~ #0 #6 // Wear Magical Armor AND Magic Rings (etc.)
~SETUP-EASE.TP2~ #0 #9 // Un-Nerfed THAC0 Table, Saving Throws, Grand-Mastery, and Arcane, Divine Spell Progression (Blucher)
~SETUP-EASE.TP2~ #0 #10 // XP Cap Remover
~SETUP-EASE.TP2~ #0 #15 // Bonus Merchants (Baldurdash)
~SETUP-EASE.TP2~ #0 #18 // Imoen ToB Dialogue Fix
~SETUP-EASE.TP2~ #0 #19 // Shapeshifter Rebalancing
~SETUP-EASE.TP2~ #0 #21 // Romance: Bug Fixes (required for later components).
~SETUP-UB.TP2~ #0 #0 // The Kidnapping of Boo by Cliffette
~SETUP-UB.TP2~ #0 #1 // The Suna Seni/Valygar Relationship
~SETUP-UB.TP2~ #0 #2 // Kalah and What He Was Promised
~SETUP-UB.TP2~ #0 #3 // "Cat and Mouse" (Bodhi hunts you in Spellhold) by Ghreyfain
~SETUP-UB.TP2~ #0 #4 // Gorje Hilldark and the Extended Illithium Quest
~SETUP-UB.TP2~ #0 #5 // The Pai'Na/Spider's Bane Quest
~SETUP-UB.TP2~ #0 #6 // Restored Crooked Crane Inn
~SETUP-UB.TP2~ #0 #7 // Restored Encounters
~SETUP-UB.TP2~ #0 #8 // Artemis Entreri in Bodhi's Lair
~SETUP-UB.TP2~ #0 #9 // Corrected "Xzar's Creations"
~SETUP-UB.TP2~ #0 #10 // Restored Hell Minions, by SimDing0
~SETUP-UB.TP2~ #0 #11 // Gorf the Squisher Fix, by Gebhard Blucher
~SETUP-UB.TP2~ #0 #12 // Item Restorations
~SETUP-UB.TP2~ #0 #16 // Corrected BAMs and Scripts
~SETUP-UB.TP2~ #0 #17 // Corrected Character Names and Biographies
~SETUP-UB.TP2~ #0 #18 // Restored Minor Dialogs
~SETUP-UB.TP2~ #0 #19 // Restored Bhaalspawn Powers, by David Gaider
~SETUP-UB.TP2~ #0 #20 // Extended ToB Item Descriptions
~SETUP-UB.TP2~ #0 #21 // Throne of Bhaal Minor Restorations
~SETUP-UB.TP2~ #0 #22 // Justifier Kit
~SETUP-UB.TP2~ #0 #23 // Feralan Kit
~SETUP-UB.TP2~ #0 #24 // Sarevok's Remorse
~SETUP-ASCENSION.TP2~ #0 #0 // Ascension v1.41 (requires ToB)
~SETUP-ASCENSION.TP2~ #0 #1 // Tougher Abazigal (optional, requires ToB)
~SETUP-ASCENSION.TP2~ #0 #2 // Original Tougher Demogorgon (optional, requires ToB)
~SETUP-ASCENSION.TP2~ #0 #3 // Tougher Gromnir (optional, requires ToB)
~SETUP-ASCENSION.TP2~ #0 #4 // Tougher Illasera (optional, requires ToB)
~SETUP-ASCENSION.TP2~ #0 #5 // Tougher Yaga-Shura (optional, requires ToB)
~SETUP-BANTERPACK.TP2~ #0 #0 // Pocket Plane Banter Pack for BG2: Shadows of Amn
~SETUP-BANTERPACK.TP2~ #0 #2 // Pocket Plane Banter Pack for BG2: Throne of Bhaal
~SETUP-D0TWEAK.TP2~ #0 #0 // Enhanced Goodberries
~SETUP-D0TWEAK.TP2~ #0 #1 // Corrected Summoned Demon Behaviour
~SETUP-D0TWEAK.TP2~ #0 #2 // Corrected Demon Animations
~SETUP-D0TWEAK.TP2~ #0 #4 // Tweaked Weapon Enchantments
~SETUP-D0TWEAK.TP2~ #0 #5 // Additional Racial Enemies
~SETUP-D0TWEAK.TP2~ #0 #7 // PnP Celestial Fury
~SETUP-D0TWEAK.TP2~ #0 #8 // Ghrey's Holy Symbol Fix
~SETUP-D0TWEAK.TP2~ #0 #9 // Kill Cespenar
~SETUP-D0TWEAK.TP2~ #0 #10 // Smarter Illusionary Clones
~SETUP-D0TWEAK.TP2~ #0 #12 // Dual Class Wild Mages
~SETUP-D0TWEAK.TP2~ #0 #13 // Kensai Ryu's Restored Drow Innate Abilities
~G3TWEAKS.TP2~ #0 #0 // SoA World Map Fixes
~G3TWEAKS.TP2~ #0 #3 // Change Magically Created Weapons to Zero Weight
~G3TWEAKS.TP2~ #0 #6 // Make +x/+y Weapons Consistent
~G3TWEAKS.TP2~ #0 #7 // English Only: Description Updates for Make +x/+y Weapons Consistent Component
~G3TWEAKS.TP2~ #0 #49 // Weapon Animation Tweaks
~G3TWEAKS.TP2~ #0 #55 // Restore SoA Load Screen Logo (ToB Only)
~G3TWEAKS.TP2~ #0 #61 // Commoners Use Drab Colors
~G3TWEAKS.TP2~ #0 #64 // Icon Improvements
~G3TWEAKS.TP2~ #0 #91 // Force All Dialogue to Pause
~G3TWEAKS.TP2~ #0 #97 // Alter HP Triggers for NPC Wounded Dialogues
~G3TWEAKS.TP2~ #0 #116 // Improved Athkatlan City Guard
~G3TWEAKS.TP2~ #0 #137 // Expanded Dual-Class Options
~G3TWEAKS.TP2~ #0 #152 // Sellable Staffs, Clubs, and Slings (Icelus)
~G3TWEAKS.TP2~ #0 #194 // Bottomless Containers
~G3TWEAKS.TP2~ #0 #197 // Add Ammo Belts and Potion Cases to SoA
~G3TWEAKS.TP2~ #0 #227 // Give Edwin his BG Stats
~G3TWEAKS.TP2~ #0 #230 // Give Jaheira her BG Stats
~G3TWEAKS.TP2~ #0 #231 // Change Jaheira to Neutral Good
~G3TWEAKS.TP2~ #0 #233 // Give Minsc his BG Stats
~G3TWEAKS.TP2~ #0 #236 // Give Viconia her BG Stats
~SETUP-OVERSIGHT.TP2~ #0 #0 // Tougher Sendai (TOB Required)
~SETUP-OVERSIGHT.TP2~ #0 #1 // Alignment Correction
~SETUP-OVERSIGHT.TP2~ #0 #2 // Class Tweaks/Fixes
~SETUP-OVERSIGHT.TP2~ #0 #3 // Altered Spells
~SETUP-OVERSIGHT.TP2~ #0 #4 // Improved Continuity
~SETUP-OVERSIGHT.TP2~ #0 #6 // Monk High Level Abilities
~SETUP-APACK.TP2~ #0 #0 // Dual Wielding fix and Rogue Shop
~SETUP-APACK.TP2~ #0 #1 // Thief kit & HLA revisions
~SETUP-APACK.TP2~ #0 #2 // Bard kit & HLA revisions
~SETUP-APACK.TP2~ #0 #3 // Chosen of Cyric Encounter
~SETUP-APACK.TP2~ #0 #4 // Shadow Thief Improvements
~SETUP-APACK.TP2~ #0 #5 // Elven Charm/Sleep resistance fix
~SETUP-VIRTUE.TP2~ #0 #0 // Virtue
~SETUP-REFINEMENTS.TP2~ #0 #0 // Revised High Level Abilities
~SETUP-REFINEMENTS.TP2~ #0 #1 // "SwashImoen"
~SETUP-REFINEMENTS.TP2~ #0 #2 // Shapeshifting fix
~SETUP-REFINEMENTS.TP2~ #0 #3 // Universal lesser mage robes

Hm. Well, none of those should affect Cernd's willingness to stay in the party, though if Virtue is installed, I don't know what Virtue values would make Neutral characters want to leave. Why isn't Virtue listed in your list of mods?

Advice: Save a separate copy of your game, and don't overwrite it. Next, load your game up and, instead of talking to Cernd to bring him into the party, Ctrl-Q him (you'll need to have the CheatKeys enabled). This might circumvent his strange dialogue flaw, though it might also bug up his dialogue for the rest of the game (I had that happen to me with Jan once). So I wouldn't recommend it for those who want to use Cernd throughout the game--but then, who the heck does? (Then again, seeing as how you have Weimer's Unbalanced Shapeshifter installed, I could be wrong--but then again, you also have Refinements installed, which has been installed after Ease-Of-Use, so it will either mitigate Weimer's version....or stack with it.)

You'll have to uninstall Shadow Thief Improvements if you think there's a chance you might want to work for Bodhi ever again.

The "I question throwing away the apple while it is still green" line comes when you dismiss him.

If your not dismissing him its definitely a bug. Since you have so many mods installed it is impossible to say which one is causing this, but I've never encountered anything like this.