Sven, I am fairly confident that I have all the required libraries installed and configured correctly. Everything works fine, including reading data from my remote server and applying updates. The exception is that if at design time I change the Active property of any data related non visual component, then I get an AV. Also, I did follow the instructions or guide on that page prior to your suggestion and ti helped me connect to my remote server.
Michael, To be sure I have the correct sources, I tried this twice. Once with my current Lazarus, and again with svn fixes_2_0 Lazarus. Both exhibit the same behavior and stack trace. Here is a screenshot of the error and the stack trace. I simply opened the my project, set the SQL query Active property to False, and I get this error. https://cache.getlazarus.org/images/sql-linux-av.jpg Stack trace: ~$ sudo gdb -batch -ex bt -p 29126 [New LWP 29127] [New LWP 29128] [New LWP 29129] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 0x00007fb9b9ed374d in poll () at ../sysdeps/unix/syscall-template.S:84 84 ../sysdeps/unix/syscall-template.S: No such file or directory. #0 0x00007fb9b9ed374d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00000000004ea81c in GTK2POLLFUNCTION (UFDS=0x3858b80, NFSD=5, TIMEOUT=50) at gtk2/gtk2widgetset.inc:44 #2 0x00007fb9bad9238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fb9bad92712 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fb9bb371b83 in gtk_dialog_run () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 #5 0x000000000050c264 in PROMPTUSER (this=0x7fb9bc6fa310, DIALOGCAPTION=0x137b180 "Error", DIALOGMESSAGE=0x7fb994e803d8 "Access violation", DIALOGTYPE=257, BUTTONS=0x7fb9a8943c60, BUTTONCOUNT=1, DEFAULTINDEX=0, ESCAPERESULT=2) at gtk2/gtk2lclintf.inc:1271 #6 0x00000000005b982d in PROMPTUSER (DIALOGCAPTION=0x137b180 "Error", DIALOGMESSAGE=0x7fb994e803d8 "Access violation", DIALOGTYPE=257, BUTTONS=0x7fb9a8943c60, BUTTONCOUNT=1, DEFAULTINDEX=0, ESCAPERESULT=2) at include/lclintf.inc:376 #7 0x000000000057ae91 in MESSAGEDLG (ACAPTION=0x137b180 "Error", AMSG=0x11fdc10 "Access violation", DLGTYPE=MTERROR, BUTTONS=..., HELPCTX=0) at include/messagedialogs.inc:148 #8 0x00000000008d5937 in SETROWVALUE (this=0x7fb994a87930, CHECKFOCUS=true, FORCEVALUE=true) at objectinspector.pp:1602 #9 0x00000000008d65c3 in VALUECHECKBOXCLICK (this=0x7fb994a87930, SENDER=0x7fb994a88d90) at objectinspector.pp:1764 #10 0x0000000000cc7e33 in SETSTATE (this=0x7fb994a88d90, AVALUE=CBUNCHECKED) at checkboxthemed.pas:475 #11 0x0000000000cc7d14 in SETCHECKED (this=0x7fb994a88d90, AVALUE=false) at checkboxthemed.pas:460 #12 0x00000000008d86a5 in SETITEMINDEXANDFOCUS (this=0x7fb994a87930, NEWITEMINDEX=0, WASVALUECLICK=true) at objectinspector.pp:2295 #13 0x00000000008d8a30 in MOUSEDOWN (this=0x7fb994a87930, BUTTON=MBLEFT, SHIFT=..., X=184, Y=7) at objectinspector.pp:2399 #14 0x00000000005a1998 in DOMOUSEDOWN (this=0x7fb994a87930, MESSAGE=..., BUTTON=MBLEFT, SHIFT=...) at include/control.inc:2283 #15 0x00000000005a1fd9 in WMLBUTTONDOWN (this=0x7fb994a87930, MESSAGE=...) at include/control.inc:2462 #16 0x0000000000431bca in SYSTEM$_$TOBJECT_$__$$_DISPATCH$formal () #17 0x00007fb994a87930 in ?? () #18 0x00007fff33fc7e10 in ?? () #19 0x0000000000000201 in ?? () #20 0x000000000000002c in ?? () #21 0x00000000016d3900 in .Ld233 () #22 0x00000000016d3228 in VMT_$CONTROLS_$$_TWINCONTROL$indirect () #23 0x00007fff33fc8090 in ?? () #24 0x0000000003c41710 in ?? () #25 0x00007fff33fc80b0 in ?? () #26 0x00007fff33fc8110 in ?? () #27 0x000000000066aee0 in ?? () #28 0x00000000005a18a4 in WNDPROC (this=0x7fb994a87930, THEMESSAGE=...) at include/control.inc:2243 #29 0x0000000000594899 in WNDPROC (this=0x7fb994a87930, MESSAGE=...) at include/wincontrol.inc:5425 #30 0x0000000000754322 in DELIVERMESSAGE (TARGET=0x7fb994a87930, AMESSAGE=0) at lclmessageglue.pas:112 #31 0x000000000065d950 in DELIVERMESSAGE (TARGET=0x7fb994a87930, AMESSAGE=0) at gtk2/gtk2proc.inc:3780 #32 0x000000000066b8a9 in DELIVERMOUSEDOWNMESSAGE (WIDGET=0x3c287f0, EVENT=0x41f8c30, AWINCONTROL=0x7fb994a87930) at gtk2/gtk2callback.inc:2071 #33 0x000000000066af18 in GTKMOUSEBTNPRESS (WIDGET=0x3c41710, EVENT=0x41f8c30, DATA=0x7fb994a87930) at gtk2/gtk2callback.inc:1798
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