I did an update this morning and now trapped crashes

Seems like tp is not set in preallocation.  Have not chased this yet,
but this is an area I am not sure I understand

==John ffitch
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Csound version 5.00 beta (float samples) May  9 2004

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 10021)]
0x08060859 in instance (insno=-1073743920) at Engine/oload.c:714
714             if (tp->mdepends & 06) {                /* if need midi chan, chk ok */
(gdb) print tp
$1 = (INSTRTXT *) 0x0
(gdb) where
#0  0x08060859 in instance (insno=-1073743920) at Engine/oload.c:714
#1  0x40423438 in prealloc (p=0x815806c) at Opcodes/pitch0.c:85
#2  0x08058554 in init0 () at Engine/insert.c:76
#3  0x08060644 in oload () at Engine/oload.c:657
#4  0x0805cae0 in musmon () at Engine/musmon.c:250
#5  0x0804eb7b in csoundCompile (csound=0x811a6c0, argc=2, argv=0xbffffa44)
    at Top/main.c:574
#6  0x0804d043 in main (argc=3, argv=0xbffffa44)
    at frontends/csound/csound_main.c:12