nanoDLP

Hi,
My printer uses an Arduino and Ramps.
Unfortunately, the projector begins too early to expose.
I could partially overcome the problem by increasing the "Wait BeforePrint"  to 10 sec
in "Normal Layers" as well as in "Burn-in layer".
But there is further the expose problem in the first layer .
I have attached the terminal output and there I marked the Position where it happens.
My GCodes are:

GCode - Start of Print:
==========================
M203 X2 Y10 Z7
M201 X10 Z40
M204 X0.1 Z0.1
M84 S0
G21
G91
G1 Z-1 F90
G1 Z100 F90
[[Delay 10]]
G90
G92 X-9.5 Z123.4
[[PositionSet 123.4]]
G1 Z20 F400
[[WaitForDoneMessage]]
G1 Z10 F90
[[WaitForDoneMessage]]
=========================

Before Each Layer:
=========================
G1 X0 F150
[[WaitForDoneMessage]]
G1 Z[[LayerPosition]] F40
[[WaitForDoneMessage]]
[[PositionSet [[LayerPosition]]]]
=========================

After Each Layer:
========================
G1 X-4 F50
[[WaitForDoneMessage]]
G1 Z{[[LayerPosition]]+[[ZLiftDistance]]} F20
[[WaitForDoneMessage]]
[[PositionChange [[ZLiftDistance]]]]
========================

Terminal output:
========================
M203 X2 Y10 Z7
M201 X10 Z40
M204 X0.1 Z0.1
M84 S0
G21
G91
G1 Z-1 F90
G1 Z100 F90
ok ok ok ok ok ok ok Z_move_comp ok Z_move_comp echo:endstops hit: Z:123.40

G90
G92 X-9.5 Z123.4

G1 Z20 F400
                          <<<<<<<< missing "Z_move_comp"
G1 Z10 F90
ok ok ok Z_move_comp
M280 P0 S1100
G1 X0 F150
ok Z_move_comp

G1 Z0.1 F40
ok ok Z_move_comp ok Z_move_comp   <<<<<<<< why there are two "Z_move_comp" ?
M280 P0 S1900
ok   <<<<<<<<<<<<<<<<<<<<<<<<<<  Beginn to expose, shutter did not realy open-close, but it is too early, Z move not complete
M280 P0 S1100
ok
G1 X-4 F50
ok Z_move_comp

G1 Z4.1000 F20
ok Z_move_comp
G1 X0 F150
ok Z_move_comp

G1 Z0.2 F40
ok Z_move_comp
M280 P0 S1900
ok
M280 P0 S1100
ok
G1 X-4 F50
ok Z_move_comp

G1 Z4.2000 F20
ok Z_move_comp
G1 X0 F150
ok

G1 Z0.3 F40
Z_move_comp ok Z_move_comp
M280 P0 S1900
ok
M280 P0 S1100
ok
G1 X-4 F50
ok

G1 Z4.3000 F20
Z_move_comp ok Z_move_comp
G1 X0 F150
ok Z_move_comp

G1 Z0.4 F40
ok Z_move_comp
M280 P0 S1900
ok
M280 P0 S1100
ok
G1 X-4 F50
ok Z_move_comp

G1 Z4.4000 F20
ok Z_move_comp
G1 X0 F150
ok Z_move_comp

G1 Z0.5 F40
ok Z_move_comp
M280 P0 S1900
ok
M280 P0 S1100
ok
G1 X-4 F50
ok Z_move_comp

G1 Z4.5000 F20
ok Z_move_comp
G1 X-9.5 F150
G1 Z250 F200
M84
M280 P0 S1100
ok Z_move_comp ok Z_move_comp echo:endstops hit: Z:123.40 ok

I tried to upload a svg. file and afterwards nanoDLP crashed.
Now I do not get working nanoDLP anymore,
even if I reboot Raspberry, the website is unreachable.
What can I do to get nanoDLP working ?

Here is a part of /var/log/printer.log:

goroutine 24 [running]:
panic(0x4d21b0, 0x10b4e7a0)
    /usr/local/go/src/runtime/panic.go:464 +0x330
_/home/pi/printer/app/svg.(*SVG).loadMask(0x10a4e180)
    /home/pi/printer/app/svg/svg.go:205 +0x2b0
_/home/pi/printer/app/svg.(*SVG).SliceRender(0x10a4e180, 0x4ea800)
    /home/pi/printer/app/svg/svg.go:107 +0x55c
main.(*monitorStruct).watch(0x7731a8)
    /home/pi/printer/app/slice-monitor.go:62 +0x338
created by main.main
    /home/pi/printer/app/server.go:52 +0xc8
2016/04/01 18:49:33.773330 {"Layer":"1","module":"JSON","level":"Warning","msg":"Skipping db/buttons.json file. stat db/buttons.json: no such file or directory "}
2016/04/01 18:49:33.775369 {"Layer":"1","module":"JSON","level":"Warning","msg":"Skipping db/custom-inputs.json file. stat db/custom-inputs.json: no such file or directory "}
2016/04/01 18:49:33.794167 {"Layer":"1","module":"Shutter","level":"Error","msg":"Pipe Access Problem open /dev/pigpio: no such file or directory "}
2016/04/01 18:49:33.828160 {"Layer":"1","module":"JSON","level":"Warning","msg":"Skipping public/plates/4/info.json file. stat public/plates/4/info.json: no such file or directory "}
panic: interface conversion: image.Image is *image.Paletted, not *image.RGBA

goroutine 24 [running]:
panic(0x4d21b0, 0x10b5a8a0)
    /usr/local/go/src/runtime/panic.go:464 +0x330
_/home/pi/printer/app/svg.(*SVG).loadMask(0x1090c400)
    /home/pi/printer/app/svg/svg.go:205 +0x2b0
_/home/pi/printer/app/svg.(*SVG).SliceRender(0x1090c400, 0x4ea800)
    /home/pi/printer/app/svg/svg.go:107 +0x55c
main.(*monitorStruct).watch(0x7731a8)
    /home/pi/printer/app/slice-monitor.go:62 +0x338
created by main.main
    /home/pi/printer/app/server.go:52 +0xc8