[Lazarus] Cannot open Windows Form on Linux

[John Landmesser]

i would like to know what is wrong with that project:

Developed on win32, still editing fine there,  i can't open it since 
some time on Linux:

These messages appear:

executed:
john1 at siductionbox:~/lazarus$ ./lazarus 
/media/sda1/PROJEKTE/Lazarus/Faks_Meldung/FAKS_Meldung.lpi

Messages:
> Hint: (lazarus) [TMainIDE.ParseCmdLineOptions] 
> PrimaryConfigPath="/home/john1/.lazarus"
> Hint: (lazarus) [TMainIDE.ParseCmdLineOptions] 
> SecondaryConfigPath="/etc/lazarus"
> Hint: (lazarus) [TBuildManager.SetBuildTarget] Old=x86_64-linux-gtk2 
> New=x86_64-linux-gtk2 FPC=True LCL=False
> TObjectInspectorDlg.FillPersistentComboBox: Updating ComboBox with 
> components
> TObjectInspectorDlg.FillPersistentComboBox: Updating ComboBox with 
> components
> TComponentTreeView.SetSelection: Updating component node values.
>
> *(lazarus:11615): Pango-CRITICAL **: 
> pango_layout_get_font_description: assertion 'PANGO_IS_LAYOUT 
> (layout)' failed*



System:
Lazarus 1.7 r52780 FPC 3.0.0 x86_64-linux-gtk 2



if i open the form from a different project i get:
>
> Invalid floating point operation.
>
> Press OK to ignore and risk data corruption.
> Press Abort to kill the program.

Linux-version:
Debian Sid
CPU~Dual core Pentium E5200 (-MCP-) speed/max~1600/2500 MHz 
Kernel~4.7.0-towo.1-siduction-amd64 x86_64 Up~51 min Mem~1339.7/3948.2MB 
HDD~160.0GB(47.1% used) Procs~193 Client~Shell inxi~2.3.0
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