problem with sendfax

[Ludovico Magnocavallo <root@mailhub.communicate.it>]

I am running Hylafax 4.0pl1 on a Linux 2.0.21 machine, and I get the
following message from sendfax:

Unrecoverable error: invalidfileaccess in .outputpage
Operand stack:
    true  1

Unexpected interpreter error -9.
Error object: (f80)op(245:.outputpage)0x80642c4
Operand stack at 0x8140f08:
0x81489d4: 0x0b int  --F------ 0x0000 0x00000001 = 1
0x81489dc: 0x01 bool --F------ 0x0000 0x00000001 = true
Execution stack at 0x8140f5c:
0x814a33c: 0x0f oper --F---e-- 0x0000 0x08050000 = %interp_exit
0x814a344: 0x12 str  --F-rxe-- 0x0000 0x00000000 = 
0x814a34c: 0x03 file --L-rxe-- 0x0001 0x08151978
0x814a354: 0x0e null --F---e-- 0x0000 0x0805aeb4
0x814a35c: 0x03 file --S-rxe-- 0x0001 0x08144294
0x814a364: 0x0f oper --F---e-- 0x0000 0x0805ae70 = %runexec_finish
0x814a36c: 0x03 file --S-rxe-- 0x0001 0x08144294
0x814a374: 0x05 mpry --G-rxe-- 0x0002 0x0817fec6
0x814a37c: 0x05 mpry --G-rxe-- 0x0003 0x0817feac
0x814a384: 0x05 mpry --G-rxe-- 0x0039 0x08180532
Dictionary stack at 0x8140e84:
0x814ab6c: 0x02 dict --Gwrx--- 0x0000 0x0814acbc
0x814ab74: 0x02 dict --Gwrx--- 0x0000 0x0818f7d0
0x814ab7c: 0x02 dict --Lwrx--- 0x0000 0x0814fbc0
0x814ab84: 0x02 dict --Lwrx--- 0x0000 0x08151a00

Any help is appreciated.

(GS works fine, and hylafax itself has been working flawlessly for a
while).

Thank you

Ludovico Magnocavallo
Communicate! srl
+39 2 58305818
ludo@communicate.it