Hi
XP is a 32 bits OS.
Your machine has 2 vcpu and 4096 MB (a minor amount must be better, like 3072) but ...
Here
2013-04-09T20:17:09.142+02:00| Worker#0| I120: DISKLIB-SPARSE: "D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk" : failed to open (14): Disk needs repair.
2013-04-09T20:17:09.143+02:00| Worker#0| I120: DISKLIB-LINK : "D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk" : failed to open (The specified virtual disk needs repair).
2013-04-09T20:17:09.143+02:00| Worker#0| I120: DISKLIB-CHAIN : "D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk" : failed to open (The specified virtual disk needs repair).
2013-04-09T20:17:09.143+02:00| Worker#0| I120: DISKLIB-LIB : Failed to open 'D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk' with flags 0xa The specified virtual disk needs repair (14).
2013-04-09T20:17:09.285+02:00| Worker#0| I120: DISKLIB-DSCPTR: Opened [0]: "Windows XP Professional.vmdk" (0xa)
2013-04-09T20:17:09.285+02:00| Worker#0| I120: DISKLIB-LINK : Opened 'D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk' (0xa): monolithicSparse, 83886080 sectors / 40 GB.
2013-04-09T20:17:09.285+02:00| Worker#0| I120: DISKLIB-LIB : Opened "D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk" (flags 0xa, type monolithicSparse).
2013-04-09T20:17:09.285+02:00| Worker#0| I120: DiskGetGeometry: Reading of disk partition table
2013-04-09T20:17:09.285+02:00| Worker#0| I120: DISK: Disk 'D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk' has UUID '60 00 c2 9c d3 44 a6 af-1d d1 72 09 f5 ec 45 15'
2013-04-09T20:17:09.285+02:00| Worker#0| I120: DISK: OPEN 'D:\Eigene Dateien\Jan Cornelissen\Documents\Virtual Machines\Windows XP Professional\Windows XP Professional.vmdk' Geo (5874/255/56) BIOS Geo (0/0/0)
You can see a disk error in your 40 gb hard disk
And try to deactivate 3d acceleration
Regards