Date:2013-10-19
Safety:Kaspersky McAfee Noton BitDefender AVG

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arpack.dll

·Go to the download page

Using the zip or rar file
1.Download arpack.dll
2.Extract arpack.dll from .zip. We recommend that you extract arpack.dll to the installation directory of the program that is requesting arpack.dll.
3.If that doesn't work, you will have to extract arpack.dll to your system directory. By default, this is:
C:\Windows\System32 (Windows XP, Vista, 7, 8)
C:\WINNT\System32 (Windows NT/2000)
C:\Windows\System (Windows 95/98/Me)
4.If you use a 64-bit version of Windows, you should also place arpack.dll in C:\Windows\SysWOW64\
5.Make sure overwrite any existing files (but make a backup copy of the original file).
6.Reboot your computer.
7.If the problem still occurs, try the following:
8.Open Windows Start menu and select "Run...".
9.Type CMD and press Enter (or if you use Windows ME, type COMMAND)).
10.Type regsvr32 arpack.dll and press Enter.