Strange HPL failure

IDS 9.40FC3W2 on HP-UX 11.11 HPL has "suddenly" stopped working on this database server, although it runs OK on otther databases on the same server, And we did previously have it working on this database server at this version. Job adds, describes etc work OK but when you try to run a job it hangs for a minute or so then barfs with the strange error below. If you then capture the $? return value, it's 255. It's the same on 9.40FC4. Anyone run into this? cheers Neil informix@hamilton[/home/system/informix] onpladm describe device andy_test_ar> BEGIN OBJECT DEVICEARRAY andy_test_arr BEGIN SEQUENCE TYPE FILE FILE /exports/andy/hplscripts/file1 <snip> END OBJECT informix@hamilton[/home/system/informix] onpladm run job prod_andy -fu Connecting to onpload, Please wait... Onpload cannot validate logging state of target database informix@hamilton[/home/system/informix] echo $? 255