hi,
when i try to install build 1 of RC1 of eZ Publish 4.6 ((ezpublish-4.6.0-rc1-ee-bul_build-1-full.tar.gz)), i have a fatal error. The error happens right after i place my installation link on the browser
Enabling debugOutput, the result is:

Timing: Nov 09 2011 15:31:26

Script start

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/template-c6ee29cf29032e5b4d98caef606d8fbd.php', perhaps wrong permissions?

Error: eZDebug::writeFile Nov 09 2011 15:31:26

Cannot open log file 'var/log/error.log' for writing
The web server must be allowed to modify the file.
File logging for 'var/log/error.log' is disabled.

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/module-545011a5ed09072872ff954949555404.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/site-47e35424336af3c2b858faec0dfb5832.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/debug-46e8111bb0d27c8335061d46f08eb95f.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/eng-GB-fde87b01b3f81b5edf150952bd4f2a9f.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/template-10aa81682c991512e89f91668a89d2cd.php', perhaps wrong permissions?

Timing: Nov 09 2011 15:31:26

Module start 'setup'

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/setup-f80ccd634b030662dddf13be07cc3f41.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/image-061f43bd2501d9986e554ac57d42dd59.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ara-SA-d7611065dd32a9f39013304a0c940739.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/cat-ES-5de314e1b50a6dbb83024bfce4df6b58.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/chi-CN-80d5867f5398a260afbc0088690cb9f0.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/chi-HK-806abe08185a16aa8ac9484156a239c1.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/chi-TW-23c0f2dbb066c2581b0f68193b79e418.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/cro-HR-5095b2c96391511a5c50b59650aa9798.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/cze-CZ-b497c22895fa7f818a236c35ed933959.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/dan-DK-cede7ce4ea05c1dc2a9d5a5137f718aa.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/dut-NL-583936d300e3fbbdcb15aaa71bb3eafd.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ell-GR-3ff6e3a84c4a06620660919d787b2824.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/eng-AU-2ef18501ef0a06902abfbcfacce1fb32.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/eng-CA-598c28cb642a757954774e28c22f46a3.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/eng-GB@euro-df728234ba07f6bb585fcad362ab5a7a.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/eng-NZ-793ff62f408575739a56c9c60f22fe96.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/eng-US-042313e4942d68c1e77cd24e2093fef6.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/esl-ES-6ebad864f6037c863c0b3db433915c63.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/esl-MX-0943cb44951495eea6ff944f63464d66.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/fin-FI-b85f6e8fa9a8048c0259aaedcfff6a5a.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/fre-BE-fff5d39abcfb324f1cc4ce0731225c07.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/fre-CA-fd99715b477ccbc5c0cb145babe084e6.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/fre-FR-f5478cff544a32fa19ff5f4cf6283618.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ger-DE-241ef5b5a10fece395e86f1503898809.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ger-DE@euro-e80faaf77d34bdb684645f7add24b6f0.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/heb-IL-b6a6f803ac652d77982e751638c978b7.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/hin-IN-8b3e110469b96aba3ceda677c6609d89.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/hun-HU-d90051e5c8a958dc54dab84dd9d05ef5.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ind-ID-c6c1c1ddd2e12fc1020f4f1c6f94aacd.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ita-IT-786f14376e6eadb87181177522bb07ad.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/jpn-JP-d8391cbf0dc8370fdd88b6f967267b74.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/jpn-JP@international-fe5697d4d0358f91f0380e9e80102d39.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/kor-KR-ddeae0d9613dcacbf6b89e50d550f2e3.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/nno-NO-458a8b236bd850c6fda2052c2b6be0cf.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/nor-NO-dd4cda0ae0b24e6290955cf2e8d3ada1.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/nor-NO@intl-496c5526d6224152276c9882805be8af.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/nor-NO@spraakraad-88b50bda44753b39db004cd87bbd91ba.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/pol-PL-600319def3a58d37afc248146baf0880.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/por-BR-d8c661875766a3123dbf3909e4381cf6.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/por-MZ-765bcdfefa902f55a2ca9ccc11a80dc8.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/por-PT-eb9a4b329b2e258debb3249d2d8a3cd5.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/por-PT@euro-fb98c72f8a194611b9f1710656cef168.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/rus-RU-9b9e46884e598d2a303f62a72b3e7da1.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ser-SR-406f78f2416a42a0fbbc177e26011b48.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/slk-SK-707cda1a78730b4c081e41298c4314d2.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/srp-RS-3496ed62a799c50c00a7a14a44931462.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/swe-SE-65cebee6e0527092baeae7865d07f357.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/tur-TR-999427ca8ebb60db391103fd04ed6bc5.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/ukr-UA-adc4b1dd705a2f9ea7ad8d69aadfcc5c.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/override-b273bc2282a1ed186eaf2a34466f24b0.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/design-dad815461d1f98f6463ba338a5a4793c.php', perhaps wrong permissions?

Error: eZINI::saveCache Nov 09 2011 15:31:26

Couldn't create cache file 'var/cache/ini/file-848aa7d19f451e6fafbf9f741f34bc26.php', perhaps wrong permissions?

Error: Nov 09 2011 15:31:26

Could not open file 'var/cache/override/override_8e90b0d63025faec1ef0ecd38da41be2.php' for writing, perhaps wrong permissions

Error: eZPHPCreator::store Nov 09 2011 15:31:26

Failed to open file 'var/cache/override/override_8e90b0d63025faec1ef0ecd38da41be2.php'

Error: eZTemplateDesignResource::createOverrideCache Nov 09 2011 15:31:26

Could not write template override cache file, check permissions in var/cache/override/.
Running eZ Publish without this cache will have a performance impact.