<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Eric,<div class=""><br class=""></div><div class="">Thank you for your advice, I've changed <span style="background-color: rgb(255, 255, 255);" class="">MAXIF=256 in PUVD.INC and run INSTEP2 AND INSTEP4 afterwards, unfortunately I still get the same error message. Maybe there is something I did wrong? I didn't re-install the whole AIPS package but just run </span><span style="background-color: rgb(255, 255, 255);" class="">INSTEP2 and INSTEP4 in the "</span><span style="background-color: rgb(255, 255, 255);" class="">AIPS/31DEC17/MACINT/INSTALL" directory</span><span style="background-color: rgb(255, 255, 255);" class="">. Attached is the screen-output from both scripts, for your reference.</span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><br class=""></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class="">Thanks again!</span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><br class=""></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class="">Cheers,</span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class=""><br class=""></span></div><div class=""><span style="background-color: rgb(255, 255, 255);" class="">Feng</span></div><div class=""><font face="Menlo" class=""><span style="font-size: 11px; background-color: rgb(255, 255, 255);" class=""><br class=""></span></font></div><div class=""></div></body></html>