我正在尝试更新 TeX Live Utility，以便可以更新我的发行版，但当我尝试更新时，由于某种原因失败了。我使用的是 Mac。以下是日志中关于该问题的内容：
2015-03-10 08:30:57 +0000 Notice tlu_ipctask[589] Uncompressing TeX Live Manager Updater.....................................................................................
............................................................................................
.....
2015-03-10 08:30:57 +0000 Warning tlu_ipctask[589] ./runme.sh: line 11: kpsewhich:
command not found
2015-03-10 08:30:57 +0000 Warning tlu_ipctask[589] ./runme.sh: Cannot find TeX Live
root using kpsewhich --var-value=SELFAUTOPARENT.
2015-03-10 08:30:57 +0000 Warning tlu_ipctask[589] ./runme.sh: Please set your PATH as
needed, otherwise it's hopeless.
2015-03-10 08:30:57 +0000 Notice -[TLMAuthorizedOperation _runUntilChildExit][399]
kqueue noted that pid 590 exited (/var/folders/d_/f_t6bp352kzfkh654mqsr9280000gn/T/TLMInfraUpdateOperation.jNERhr/update-tlmgr-latest.sh --nox11)
2015-03-10 08:30:57 +0000 Notice tlu_ipctask[589] child process pid = 590 exited
2015-03-10 08:30:58 +0000 Error tlu_ipctask[589] Value of errno is No such file or directory
2015-03-10 08:30:58 +0000 Error tlu_ipctask[589] *** ERROR *** exit status of pid = 590 was 1
2015-03-10 08:30:58 +0000 Notice -[TLMAuthorizedOperation _runUntilChildExit][399]
waitpid returned 589, WIFEXITED(256) = 1, errno = 93 (Attribute not found)
2015-03-10 08:30:58 +0000 Notice -[TLMAuthorizedOperation _runUntilChildExit][399]
kqueue noted that tlu_ipctask (pid = 589) exited with status 1
2015-03-10 08:30:58 +0000 Notice -[TLMInfraUpdateOperation main][399]
Removed temp directory "/var/folders/d_/f_t6bp352kzfkh654mqsr9280000gn/T/TLMInfraUpdateOperation.jNERhr"
2015-03-10 08:31:08 +0000 Notice -[TLMLogWindowController awakeFromNib][399]
Loaded log window controller
更新（原始帖子发布几个小时后）：我尝试通过终端手动更新，大概成功了。但是，当我尝试通过 Texlive Utility 更新我的软件包时，它下载了一段时间，但最后又出现了另一个错误。似乎这个过程一直都很成功，直到接近尾声时，日志中出现了这些错误：
2015-03-10 13:18:12 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine pdftex ...
2015-03-10 13:20:06 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine pdftex.
2015-03-10 13:20:06 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine eptex ...
2015-03-10 13:21:00 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine eptex.
2015-03-10 13:21:00 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine aleph ...
2015-03-10 13:21:52 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine aleph.
2015-03-10 13:21:52 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine uptex ...
2015-03-10 13:22:41 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine uptex.
2015-03-10 13:22:41 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine ptex ...
2015-03-10 13:23:32 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine ptex.
2015-03-10 13:23:32 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine euptex ...
2015-03-10 13:24:28 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --no-error-if-no-format --byengine euptex.
2015-03-10 13:24:28 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt mf ...
2015-03-10 13:25:19 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt mf.
2015-03-10 13:25:19 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt cont-en ...
2015-03-10 13:26:20 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt cont-en.
2015-03-10 13:26:20 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt pdfcsplain ...
2015-03-10 13:27:14 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt pdfcsplain.
2015-03-10 13:27:14 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt lualatex ...
2015-03-10 13:28:05 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt lualatex.
2015-03-10 13:28:05 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt dvilualatex ...
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] done running fmtutil-sys
--no-error-if-no-engine=luajittex --byfmt dvilualatex.
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byhyphen "/usr/local/texlive/2014/texmf-
var/tex/generic/config/language.dat" ...
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903]
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] fmtutil-sys
--no-error-if-no-engine=luajittex --byhyphen "/usr/local/texlive/2014/texmf-
var/tex/generic/config/language.dat" failed (status 127), output:
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] sh: fmtutil-sys: command not found
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903]
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byhyphen "/usr/local/texlive/2014/texmf-
var/tex/generic/config/language.def" ...
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903]
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] fmtutil-sys
--no-error-if-no-engine=luajittex --byhyphen "/usr/local/texlive/2014/texmf-
var/tex/generic/config/language.def" failed (status 127), output:
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] sh: fmtutil-sys: command not found
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903]
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] running fmtutil-sys
--no-error-if-no-engine=luajittex --byhyphen "/usr/local/texlive/2014/texmf-
var/tex/generic/config/language.dat.lua" ...
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903]
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] fmtutil-sys
--no-error-if-no-engine=luajittex --byhyphen "/usr/local/texlive/2014/texmf-
var/tex/generic/config/language.dat.lua" failed (status 127), output:
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903] sh: fmtutil-sys: command not found
2015-03-10 13:28:55 +0000 Warning tlu_ipctask[903]
2015-03-10 13:28:55 +0000 Notice -[TLMLogServer _parseMessageAndNotify:][718]
Unhandled status "exiting "
2015-03-10 13:28:55 +0000 Notice tlu_ipctask[903] exiting tlmgr:
2015-03-10 13:28:55 +0000 Notice -[TLMAuthorizedOperation _runUntilChildExit][718]
kqueue noted that pid 904 exited (/usr/texbin/tlmgr --repository
http://ctan.imsc.res.in/systems/texlive/tlnet/ --machine-readable --persistent-downloads
update --all)
2015-03-10 13:28:55 +0000 Notice tlu_ipctask[903] child process pid = 904 exited
2015-03-10 13:28:56 +0000 Error tlu_ipctask[903] Value of errno is No such file or directory
2015-03-10 13:28:56 +0000 Error tlu_ipctask[903] *** ERROR *** exit status of pid = 904 was 1
2015-03-10 13:28:56 +0000 Notice -[TLMAuthorizedOperation _runUntilChildExit][718]
waitpid returned 903, WIFEXITED(256) = 1, errno = 2 (No such file or directory)
2015-03-10 13:28:56 +0000 Notice -[TLMAuthorizedOperation _runUntilChildExit][718]
kqueue noted that tlu_ipctask (pid = 903) exited with status 1