Here's the debug log for the failing file display:
Processing RepositoriesController#entry (for 193.149.12.151 at 2008-08-16 17:20:59) [GET]
Session ID: e0150320690486db591253518017d93a
Parameters: {"rev"=>"6", "action"=>"entry", "id"=>"test-rala", "controller"=>"repositories", "path"=>["README"]}
SQL (0.000089) SET NAMES 'utf8'
SQL (0.000038) SET SQL_AUTO_IS_NULL=0
Setting Columns (0.000400) SHOW FIELDS FROM `settings`
SQL (0.000034) SELECT max(`settings`.updated_on) AS max_updated_on FROM `settings`
User Columns (0.000591) SHOW FIELDS FROM `users`
User Load (0.000046) SELECT * FROM `users` WHERE (`users`.`id` = 3) AND (status = 1)
Project Columns (0.000325) SHOW FIELDS FROM `projects`
Project Load (0.000040) SELECT * FROM `projects` WHERE (`projects`.`identifier` = 'test-rala') LIMIT 1
Repository Load (0.000034) SELECT * FROM `repositories` WHERE (`repositories`.project_id = 4) LIMIT 1
Repository Columns (0.000249) SHOW FIELDS FROM `repositories`
EnabledModule Load (0.000052) SELECT * FROM `enabled_modules` WHERE (`enabled_modules`.project_id = 4)
EnabledModule Columns (0.000237) SHOW FIELDS FROM `enabled_modules`
Repository::Darcs Columns (0.000270) SHOW FIELDS FROM `repositories`
Shelling out: darcs annotate --repodir /opt/redmine/tmp/test/darcs_repository --xml-output --match "hash 6" .
Rendering template within layouts/base
Setting Load (0.000088) SELECT * FROM `settings` WHERE (`settings`.`name` = 'app_title') LIMIT 1
Setting Load (0.000041) SELECT * FROM `settings` WHERE (`settings`.`name` = 'ui_theme') LIMIT 1
Member Columns (0.000406) SHOW FIELDS FROM `members`
SQL (0.000161) SELECT count(DISTINCT `members`.id) AS count_all FROM `members` LEFT OUTER JOIN `projects` ON `projects`.id = `members`.project_id LEFT OUTER JOIN `roles` ON `roles`.id = `members`.role_id WHERE (`members`.user_id = 3 AND (projects.status=1))
Project Load Including Associations (0.000084) SELECT `projects`.`id` AS t0_r0, `projects`.`name` AS t0_r1, `projects`.`description` AS t0_r2, `projects`.`homepage` AS t0_r3, `projects`.`is_public` AS t0_r4, `projects`.`parent_id` AS t0_r5, `projects`.`projects_count` AS t0_r6, `projects`.`created_on` AS t0_r7, `projects`.`updated_on` AS t0_r8, `projects`.`identifier` AS t0_r9, `projects`.`status` AS t0_r10, `parents_projects`.`id` AS t1_r0, `parents_projects`.`name` AS t1_r1, `parents_projects`.`description` AS t1_r2, `parents_projects`.`homepage` AS t1_r3, `parents_projects`.`is_public` AS t1_r4, `parents_projects`.`parent_id` AS t1_r5, `parents_projects`.`projects_count` AS t1_r6, `parents_projects`.`created_on` AS t1_r7, `parents_projects`.`updated_on` AS t1_r8, `parents_projects`.`identifier` AS t1_r9, `parents_projects`.`status` AS t1_r10 FROM `projects` LEFT OUTER JOIN `projects` parents_projects ON `parents_projects`.id = `projects`.parent_id INNER JOIN members ON projects.id = members.project_id WHERE ((`members`.user_id = 3) AND ((projects.status=1)))
Rendered layouts/_project_selector (0.00388)
Version Columns (0.000370) SHOW FIELDS FROM `versions`
SQL (0.000032) SELECT count(*) AS count_all FROM `versions` WHERE (`versions`.project_id = 4)
Wiki Load (0.000054) SELECT * FROM `wikis` WHERE (`wikis`.project_id = 4) LIMIT 1
Board Columns (0.000373) SHOW FIELDS FROM `boards`
SQL (0.000036) SELECT count(*) AS count_all FROM `boards` WHERE (`boards`.project_id = 4)
Completed in 0.12774 (7 reqs/sec) | Rendering: 0.03267 (25%) | DB: 0.00405 (3%) | 500 Internal Server Error [http://redmine.trs.bessy.de/repositories/entry/test-rala/README?rev=6]
Updated by 
Updated by