reg文件不能导入注册表的问题！

这个问题很奇怪，下了一个网络加速的reg文件，提示“指定文件不是注册表脚本，只能引入注册表文件。”这个文件系统格式化前可以导入，重装后不能导入了！我的系统关联文件正常，卡巴扫描没有病毒。但是另外有个reg文件又可以导入注册表。百思不得其解！下了几个修复工具，RegSupreme Pro。WinASO RegFix。sreng还是没有解决问题！我把2个文件用方本贴上来，大家帮我分析一下，谢谢了！
可以导入的reg文件：
REGEDIT4

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]

"DisableTaskmgr"=dword:00000000

不能导入的reg文件：
Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\.txt]
@="txtfile"
"PerceivedType"="text"
"Content Type"="text/plain"

[HKEY_CLASSES_ROOT\.txt\PersistentHandler]
@="{5e941d80-bf96-11cd-b579-08002b30bfeb}"

[HKEY_CLASSES_ROOT\.txt\ShellNew]
"NullFile"=""

[HKEY_CLASSES_ROOT\txtfile]
@="Text Document"
"FriendlyTypeName"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,\
00,6f,00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,\
32,00,5c,00,6e,00,6f,00,74,00,65,00,70,00,61,00,64,00,2e,00,65,00,78,00,65,\
00,2c,00,2d,00,34,00,36,00,39,00,00,00
"EditFlags"=dword:00010000
"BrowserFlags"=dword:00000008

[HKEY_CLASSES_ROOT\txtfile\DefaultIcon]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,\
65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,31,00,35,\
00,32,00,00,00

[HKEY_CLASSES_ROOT\txtfile\shell]
@="open"

[HKEY_CLASSES_ROOT\txtfile\shell\open]

[HKEY_CLASSES_ROOT\txtfile\shell\open\command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,4e,00,4f,00,\
54,00,45,00,50,00,41,00,44,00,2e,00,45,00,58,00,45,00,20,00,25,00,31,00,00,\
00

[HKEY_CLASSES_ROOT\txtfile\shell\print]

[HKEY_CLASSES_ROOT\txtfile\shell\print\command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,4e,00,4f,00,\
54,00,45,00,50,00,41,00,44,00,2e,00,45,00,58,00,45,00,20,00,2f,00,70,00,20,\
00,25,00,31,00,00,00

[HKEY_CLASSES_ROOT\txtfile\shell\printto]

[HKEY_CLASSES_ROOT\txtfile\shell\printto\command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,6e,00,6f,00,\
74,00,65,00,70,00,61,00,64,00,2e,00,65,00,78,00,65,00,20,00,2f,00,70,00,74,\
00,20,00,22,00,25,00,31,00,22,00,20,00,22,00,25,00,32,00,22,00,20,00,22,00,\
25,00,33,00,22,00,20,00,22,00,25,00,34,00,22,00,00,00
以前好多reg文件都不能用了，都是修复文件关联文件错误的！
请各位高手帮帮忙！谢谢了！