[1/23/2016 11:57:08 PM.819] LSPD First Response: 
[1/23/2016 11:57:08 PM.819] LSPD First Response: ==============================
[1/23/2016 11:57:08 PM.819] LSPD First Response: UNHANDLED EXCEPTION DURING GAME THREAD TICK
[1/23/2016 11:57:08 PM.819] LSPD First Response: ------------------------------
[1/23/2016 11:57:08 PM.820] LSPD First Response: Origin: Game fiber "CalloutManager".
[1/23/2016 11:57:08 PM.820] LSPD First Response: ------------------------------
[1/23/2016 11:57:08 PM.820] LSPD First Response: Exception type: Rage.Exceptions.InvalidHandleableException
[1/23/2016 11:57:08 PM.820] LSPD First Response: Exception message: Operation is not valid because the specified  Rage.Blip is invalid.
[1/23/2016 11:57:08 PM.820] LSPD First Response: ------------------------------
[1/23/2016 11:57:08 PM.821] LSPD First Response: Inner exceptions:
[1/23/2016 11:57:08 PM.821] LSPD First Response: ------------------------------
[1/23/2016 11:57:08 PM.821] LSPD First Response: Stack trace:
[1/23/2016 11:57:08 PM.821] LSPD First Response: at Rage.Blip.Delete()

Almost always on the cleanup phase, but sometimes when they are first launched too. Any idea what typically causes this?

Do you check if the entity/blip exists? If not add checks:

                        if (myBlip.Exists())
                            myBlip.Delete();

                        if (myPed.Exists())
                            myPed.Dismiss(); //or Delete(), whatever you need

                        if (myVehicle.Exists())
                            myVehicle.Dismiss(); //or Delete(), whatever you need
 

Also if you have crashes on OnBeforeCalloutDisplayed() or OnCalloutAccepted() you should check if the entities were created correctly, if not abort the callout:

                        Ped myPed = new Ped(position); //create the ped
                        if (!myPed.Exists())  //check if the ped was correctly created and now exists
                            return false;  //if the ped doesn't exists, abort the callout

                    //continue preparing ped, myPed.BlockPermanentEvents, myPed.Inventory.GiveNewWeapon()...

Edited January 24, 201610 yr by alexguirre

Thanks, I'm still fighting with it. I didn't change anything to the blips before this started occuring so I'm wondering if it's from messing with the game fibers as I don't fully understand them yet. My if exist lists seem to include all the applicable blips.

On a side note though, the suspect doesn't get a blip until the baseprocess. Is this an issue? It worked fine before, but I wonder if it could be causing the crashing now.

What was the cause