Hi, Certain of my .el files are incorrectly compiled. See the .elc file with a long name. More details : It seems that a part of the .elc file is missing as if a part of the character strream was discarded. I cannot figure out why. But more suprisingly when renaming the file with a much more shorter name everything goes well as if there was a limitation in the file name length. I must point out that there are only ascii characters composing the file name. Moreover even with the long name the .el (uncompiled file) is perfectly correct and load perfectly as well as the .elc (compiled file) with the short name. I had this problem with emacs 24.0.50 as well as witth 24.0.95. I should say that I am using these devloppeing versions since I appreciate ieieio to be integrated in it. I never had this compilation problem with emacs 23 but probalbly never tried with so long file names. Moreover emacs 23 is no longer available on my system to test. But if it could be useful I can reinstall this stable version. See examples attached. Is there a limitation somewhere ? Regards Pierre