The next error gonna sounds stupid, so I'm gonna write every details what i have done.
I made a fresh install of KeePass portable version v2.21(http://downloads.sourceforge.net/keepass/KeePass-2.21.zip) I copied over the KPDataSave-0.0.4_for_KeePass-2.21 DLL (https://bitbucket.org/HexRx/kpdatasave/downloads/KPDataSave-0.0.4_for_KeePass-2.21.zip) to the correct location, if I run KeePass and try to login to DropBox it gives an error message : Error executing query. Check your Internet connection!" and here comes the strange part after this error if I renamed KeePass.exe to KeePassPortable.exe (or just KeePassA.exe) it is able to make the connection between KeePass and DropBox.
No windows FireWall is turned on or any other FW software, I disabled my antivirus Sw as well and tried on diffrent PC-s.
Anyone else experience this error?
Thanks in advance!