extraction error on install

extraction error on install

during installation i get an extraction error at 99% "unpacking failed". i extracted the installer, ran this setup and get this failure.

OpManager 5.5 (i try 30days trial and monitor up to 10 nodes with same error)
Windows XP-Prof

free diskspace on C:\ : 2,7 GB

File: stub32i.exe
size: 28,5 MB (29.947.183 Bytes)
size on disk (NTFS): 28,5 MB (29947.932 Bytes)
downloaded : 24.05.2005

error : "popup window" servere - unpacking failed

i try it again (on C:\ and on other disk) with same error
destination folder : c:\Programme\AdventNet\ME\OpManager

should i download teh file again, or what can i do to test this tool
















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