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Copy file exp_pdf.dll to the installation directory of the program that is requesting exp_pdf.dll. If that doesn't work, you will have to copy exp_pdf.dll to your system directory. By default, this is:
Windows 95/98/Me - C:\Windows\System Windows NT/2000 - C:\WINNT\System32 Windows XP, Vista, 7 - C:\Windows\System32If you use a 64-bit version of Windows, you should also copy exp_pdf.dll to C:\Windows\SysWOW64\
Make a backup copy of the original files Overwrite any existing files Reboot your computer. If the problem still occurs, try the following: Open Windows Start menu and select "Run...". Type CMD and press Enter (or if you use Windows ME, type COMMAND) Type regsvr32 exp_pdf.dll and press Enter.
If you can't find windows directory try the following: Open Windows Start menu and select "Run...". Type CMD and press Enter (or if you use Windows ME, type COMMAND) Type %WINDIR% and press Enter.