Crashreport imap_getchachedmails

Hallo
Seit 1 Woche benutze ich die Funktion : IMAP_GetCachedMails
in einem Script. Laeuft … aber :
Hab in dieser Woche schon einige mal folgenden Eintrag im Log :

10.02.2012 10:25:01.984 | 0 | ERROR | ScriptEngine | FunctionName: imap_getcachedmails, ThreadID: 5552, CrashReport: date/time : 2012-02-10, 10:25:01, 859ms

computer name : BAREBONE
user name : SYSTEM <admin>
registered owner : 1007 / 1007
operating system : Windows XP Service Pack 3 build 2600
system language : German
system up time : 2 days 9 hours
program up time : 1 day 11 hours
processors : 2x Intel® Core™2 Duo CPU E8400 @ 3.00GHz
physical memory : 596/3263 MB (free/total)
free disk space : (C:) 419,18 GB
display mode : 1024x768, 32 bit
process id : $1a58
allocated memory : 53,19 MB
executable : ips.exe
exec. date/time : 2012-01-23 22:47
version : 2.5.0.0
compiled with : Delphi 2006/07
madExcept version : 3.0l
callstack crc : $51c573e7, $371589ae, $371589ae
exception number : 1
exception class : EAccessViolation
exception message : Access violation at address 0046C450 in module ‚ips.exe‘. Read of address 00000008.

thread $15b0 (TExecuteThread):
0046c450 +000 ips.exe Classes TCollection.GetCount
00667d7b +0b7 ips.exe UIMAP 349 +11 TIPSIMAP.GetCachedMails
005f3e12 +2ca ips.exe Invoker 222 +78 TInterfaceInvoker.Invoke
006265d4 +4d0 ips.exe UIPSScriptEngine 1950 +80 TIPSScriptEngine.HandlePHPEvent
00622bea +87e ips.exe UIPSScriptEngine 904 +138 TIPSScriptEngine.PHPLibraryFunctionsExecute
0061e1f0 +220 ips.exe PHPSapi 327 +47 DispatchRequest
02d35fa4 +1f4 php5ts.dll execute
02d5e9b3 +113 php5ts.dll zend_execute_scripts
02d5ebc2 +1a2 php5ts.dll php_execute_script
0061af80 +01c ips.exe PHPApi 1461 +2 zend_hash_update
02d60756 +186 php5ts.dll php_request_startup
0061eff7 +1b3 ips.exe PHPSapi 837 +66 TPHPClient.RunScript
00628193 +8fb ips.exe UIPSScriptEngine 2385 +112 TExecuteThread.Execute
00405a68 +028 ips.exe System 76 +0 ThreadWrapper
0044d755 +00d ips.exe madExcept CallThreadProcSafe
0044d7bf +037 ips.exe madExcept ThreadExceptFrame
>> created by thread $1d58 (TServiceThread) at:
0062701f +083 ips.exe UIPSScriptEngine 2135 +12 TExecuteThread.Create

main thread ($15e8):
00000000 +ffbdacc4 ips.exe madStackTrace +0 StackAddrToStr
>> stack will be calculated soon

cpu registers:
eax = 00000000
ebx = 00000001
ecx = 00000002
edx = 00000000
esi = 02a12ab0
edi = 05ab1628
eip = 0046c450
esp = 037cf5a4
ebp = 037cf5c8

stack dump:
037cf5a4 80 7d 66 00 d8 f5 7c 03 - 28 53 40 00 c8 f5 7c 03 .}f…|.(S@…|.
037cf5b4 00 39 df 04 9c 88 b0 05 - ff ff ff ff 00 00 00 00 .9…
037cf5c4 13 00 00 00 8c f7 7c 03 - 14 3e 5f 00 28 16 ab 05 …|…>.(…
037cf5d4 60 6e e7 04 9c f7 7c 03 - 28 53 40 00 8c f7 7c 03 `n…|.(S@…|.
037cf5e4 ff ff ff ff 00 a6 c5 02 - 15 00 00 00 00 00 00 00 …
037cf5f4 48 f8 7c 03 e8 ae 36 7e - 00 00 00 00 00 00 00 00 H.|…6~…
037cf604 49 00 4d 00 41 00 50 00 - 5f 00 47 00 45 00 54 00 I.M.A.P.
.G.E.T.
037cf614 43 00 41 00 43 00 48 00 - 45 00 44 00 4d 00 41 00 C.A.C.H.E.D.M.A.
037cf624 49 00 4c 00 53 00 00 00 - 80 f7 7c 03 7f 00 00 00 I.L.S…|…
037cf634 88 2e 15 00 bd 5f 40 00 - 00 00 00 00 84 f8 7c 03 …_@…|.
037cf644 c4 02 00 00 00 04 00 00 - c4 02 00 00 80 f7 7c 03 …|.
037cf654 06 00 00 00 80 f6 7c 03 - 00 00 00 00 a7 b0 57 00 …|…W.
037cf664 a7 b0 57 00 01 00 00 00 - 06 67 46 00 02 00 00 00 …W…gF…
037cf674 00 00 00 00 e5 66 46 00 - d0 7a aa 05 03 00 00 00 …fF…z…
037cf684 04 00 00 00 04 00 00 00 - 42 32 40 00 dc f6 7c 03 …B2@…|.
037cf694 00 00 00 00 00 40 fd 7f - fc f6 7c 03 2a 26 80 7c …@…|.*&.|
037cf6a4 b8 f6 7c 03 00 26 80 7c - 08 22 e3 03 88 f7 7c 03 …|…&.|."…|.
037cf6b4 00 36 00 00 14 00 00 00 - 01 00 00 00 00 00 00 00 .6…
037cf6c4 00 00 00 00 10 00 00 00 - f4 f6 7c 03 ff ff ff ff …|…
037cf6d4 00 f0 fd 7f 15 75 40 00 - 4c 75 40 00 00 00 00 00 …u@.Lu@…