Getting a memory allocation error on an Open Extend doesn't make any sense. Does this error occur on all files or just on a particular file? What does the SELECT/FD for this file look like? How are you assigning the file name? Does the COBOL Server version match the Visual COBOL version that was used to compile the application? If this can be reproduced then it might be a good idea to run a CTF trace to see what is going on behind the scenes.
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