zip file on the client pc, as all other database files had been successfully transferred over to my client pc from my server pc. The problem obviously seems to be with the unzipping of the. I solved the problem by copying the folder from my server pc over to my client pc and unzipping the airports.bin file on the client pc. I can try installing the Client on the Server side and test, if the issue occurs also on the Server's side. Maybe the Windows Explorer uncompress ignores an error in the ZIP without telling me, but I have my doubts. On the Client I extracted the ZIP file without issues and the bin-File could be loaded. I copied the ZIP file from the Server's computer manually to the Client. If I extract the ZIP and place the bin file manually, then I'm able to start the client properly. The same on the client side (Windows 10 build in uncompress in the WinExplorer). I tried a manual unzip with WinRAR on the server side and this works. Server and Client are running on different systems. at System.IO._Error.EndOfFile() at System.IO.MemoryStream.InternalReadInt32() at e.e.v.eb.d.egy(Byte A_0) 08:37:29.484 Error : Unable to read beyond the end of the stream. 08:37:29.466 Error : Cannot read that as a ZipFile : Bad signature (0x00080000) at position 0x0222E9F9 at (ZipFile zf, Dictionary`2 previouslySeen) at (ZipFile zf) at (ZipFile zf) at (ZipFile zf) at (String fileName, TextWriter statusMessageWriter, Encoding encoding, EventHandler`1 readProgress) at e.v.d.m.e(String A_0) at e.e.v.eb.v.eg1(Byte A_0) 08:37:29.223 Debug : Creating file 'airports.bin' I have to report the same issue but with the a licensed version. I'm not sure, if I shall open a new topic for the same issue or not.

Aviasoft efb system