各位老师你们好，

   我的操作系统是Windows Server 2003，Step7版本为V5.5+SP4，原来为SP2，好像是升级到SP4后诊断缓冲区就不正常显示文本信息，只能显示16进制信息，读取信息困难。

Module Information - CPU 317-2 PN/DP "Diagnostic Buffer" Tab

Event 1 of 10: Event ID 16# 38CB

No entry in text database. Hexadecimal values will be displayed.

Event ID: 16# 38CB

OB: 16# 56

PK: 16# 1A

DatID 1/ 2: 16# 54 C4

Additional info1 / 2 / 3: 16# 1FFB 1FDA 8009

External error, Outgoing event

04:24:14.008 PM 11/08/2016

Event 2 of 10: Event ID 16# 38CB

No entry in text database. Hexadecimal values will be displayed.

Event ID: 16# 38CB

OB: 16# 56

PK: 16# 1A

DatID 1/ 2: 16# 54 C4

Additional info1 / 2 / 3: 16# 1FFB 1FE7 8007

External error, Outgoing event

04:24:14.000 PM 11/08/2016

Event 3 of 10: Event ID 16# 38CB

No entry in text database. Hexadecimal values will be displayed.

Event ID: 16# 38CB

OB: 16# 56

PK: 16# 1A

DatID 1/ 2: 16# 54 C4

Additional info1 / 2 / 3: 16# 1FFB 1FE6 8003

External error, Outgoing event

04:24:13.998 PM 11/08/2016

Event 4 of 10: Event ID 16# 38CB

No entry in text database. Hexadecimal values will be displayed.

Event ID: 16# 38CB

OB: 16# 56

PK: 16# 1A

DatID 1/ 2: 16# 54 C4

Additional info1 / 2 / 3: 16# 1FFB 1FDF 8008

External error, Outgoing event

04:24:13.989 PM 11/08/2016

我用另一台windows7系统相同版本的编程器读取诊断缓冲区信息正常。由于平时主要是用Server 2003那台机器，请各位老师指导，如何恢复诊断缓冲区正常的文本显示