Error occured cannot find sgfplib.dll although I have copied to the same folder.

Issue:

Error as per image below:

Try run with the test tool, it still having error even though run with Administrator.

Solution:

Issue was you had wrongly copied the dll into system folder. You can refer below for your future reference.

x64 Bit App 
– Copy all 3 dll libraries (sgfplib.dll, sgfpamx.dll, sgwsqlib.dll) from bin folder \bin\x64 folder into C:\Windows\System32

x32 Bit App
– Copy all 3 dll libraries (sgfplib.dll, sgfpamx.dll, sgwsqlib.dll) from bin folder \bin\xi386 folder into C:\Windows\SysWOW64

However, if the pc is 32 bit PC, you may need to copy only 32 bit dll library into system32 folder.