Position: relative expected

Hi,
I'm trying to run a little test program, and it aborts with the fault message: 'Motor 0 Positionssfehler (sic!) Position: relativ erwartet' ('motor 0 positioning error position: relative expected').
The program is this:

%
(G90: Set to Absolute Positioning)
G90
(G94: Feed Rate Mode Units per Minute)
G94
(G17: Select XY plane for arc moves for G2 G3)
G17
(G21: Set Units to Millimeters)
G21
(G54: Select coordinate system 1)
G54

G1 X0 Y0 F1000
G1 X10 Y0
G1 X10 Y10
G1 X0 Y10
G1 X0 Y0

M30
%

I'm a bit surprised since I'm setting G90. What am I doing wrong?

Thanks!

P.S. little typo: 'Positionssfehler' should be 'Positionsfehler'

"[sic]" Love that!

Someone needs to work on their German (not you).

Still better than the plethora of typos in this license file: mipav.cit.nih.gov/license/CopyrightInfo.html

Pretty concerning that US government screwed up on basic English writing.

I haven't tried any other program. This was my first test and I made it as basic as possible.
Could there be something in the .hal or .ini that makes it expect relative positions?
What information do you need?

How does the PC communitcate with the machine?

Sorry for the late reply.

Well, I should have respected the wisdom of the ancients: 'have you tried turning it off and on again?'.

I tried the MDI command and it worked. Then I reloaded the program and it worked, too. Nothing changed, just a reboot between the tries.

Thanks for your support!

Works 99% of the time!
(Literally)

These crap HP PCs in my school sometimes randomly decide they have bad RAM or that their firmware is corrupted or something.

(HP stuff is garbage)

Turning them off, unpluging them, and plugging them back in fixes the problem every time.

Never buy HP unless you really need to for some reason.