make installer calls from l10n desktop repacks script, fail with this error: 07:17:34 INFO - 2015-02-20 10:17:34 (6.51 MB/s) - '/builds/slave/Linux-ash-l10n-1_3-00000000000/build/ash/obj-l10n/dist/update//previous.mar' saved [53362137/53362137] 07:17:34 INFO - ERROR: could not open file in mar_open() 07:17:34 INFO - ..//builds/slave/Linux-ash-l10n-1_3-00000000000/build/ash/obj-l10n/dist/update//previous.mar: No such file or directory 07:17:34 INFO - Couldn't run "/builds/slave/Linux-ash-l10n-1_3-00000000000/build/ash/obj-l10n/dist/host/bin/mar" -t at /builds/slave/Linux-ash-l10n-1_3-00000000000/build/ash/tools/update-packaging/unwrap_full_update.pl line 51. 07:17:34 ERROR - make[2]: *** [automation-partial-patch] Error 255 It fails because it tries to concatenate a relative path with an absolute one, so it cannot find the previous.mar file (just downloaded). This patch, created by mshal solves this issue (tested on ash)