I have upgraded my site to 7 from D6. Everything went well except when I upgraded the UC module, it gives this error while enabling it from Drush
Error while trying to find the common path for enabled extensions of project rules. Extensions are: aaa_update_test,[error]
actions_loop_test, actions_permissions, admin_devel, admin_menu, admin_menu_toolbar, aggregator, aggregator_test,
ajax_forms_test, ajax_test, alumni, atom_reference, auto_nodetitle, autoassignrole, autosave, background_batch,
background_process, background_process_ass, backup_migrate, batch_test, bbb_update_test, better_exposed_filters,
better_formats, block, block_test, blog, book, bulk_export, calendar, captcha, ccc_update_test, cck, cck_phone,
chart, chart_views, color, comment, comment_og, commentformsettings, common_test, common_test_cron_helper,
computed_field, conditional_fields, conditional_fields_test, contact, content_migrate, context, context_layouts,
context_og, context_ui, contextual, cp2p2, ctools, ctools_access_ruleset, ctools_ajax_sample, ctools_custom_content,
ctools_export_test, ctools_plugin_example, ctools_plugin_test, current_search, custom_changes, dashboard,
database_test, date, date_all_day, date_api, date_context, date_migrate, date_migrate_example, date_popup,
date_repeat, date_repeat_field, date_tools, date_views, dblog, devel, devel_generate, devel_node_access, dnd,
domain, domain_alias, domain_blocks, domain_bonus_login_restrict, domain_conf, domain_content, domain_fields,
domain_menu_block, domain_nav, domain_rules, domain_settings, domain_source, domain_strict, domain_taxonomy,
domain_test, domain_theme, domain_user_rules, domain_variable, domain_variable_i18n, domain_views, donate,
drupal_system_listing_compatible_test, drupal_system_listing_incompatible_test, easy_social, emfield, entity,
entity_cache_test, entity_cache_test_dependency, entity_crud_hook_test, entity_feature, entity_query_access_test,
entity_test, entity_test_i18n, entity_token, entityreference, entityreference_behavior_example,
entityreference_prepopulate, entityreference_prepopulate_test, error_test, facebook_rules, facetapi, facetapi_test,
fboauth, fbss_activity, fbss_comments, fbss_comments_flag, fbss_comments_rules, fbss_domain, fbss_flag, fbss_mollom,
fbss_notifications, fbss_pathauto, fbss_privacy, fbss_rules, fbss_services, fbss_twitter, fbss_userpoints, features,
features_test, field, field_group, field_group_test, field_sql_storage, field_test, field_ui, file, file_entity,
file_entity_test, file_module_test, file_test, filter, filter_test, flag, flag_actions, flag_bookmark,
flagaccesstest, form_test, forum, gmap, gmap_location, gmap_macro_builder, gmap_taxonomy, gmap_test,
gmap_test_extended, google_analytics_api, google_analytics_reports, googleanalytics, help, hide_formats, hybridauth,
hybridauth_bonus, hybridauth_ulogin, i18n, i18n_block, i18n_contact, i18n_field, i18n_forum, i18n_menu, i18n_node,
i18n_path, i18n_redirect, i18n_select, i18n_string, i18n_sync, i18n_taxonomy, i18n_test, i18n_translation,
i18n_user, i18n_variable, ideal_comments, image, image_captcha, image_module_test, image_test, imagecache_external,
imagecache_profiles, invite, invite_by_email, invite_notifications, job, job_access, libraries, libraries_test,
lightbox2, link, linkedin, linkedin_auth, linkedin_profile, linkedin_status, list, list_test, locale, locale_test,
location, location_addanother, location_cck, location_email, location_entity, location_fax, location_generate,
location_gmap_find_address, location_node, location_phone, location_search, location_taxonomy, location_user,
login_destination, logintoboggan, logintoboggan_content_access_integration, logintoboggan_rules,
logintoboggan_variable, mailsystem, markup, masquerade, media, media_internet, mee, memcache, memcache_admin,
memcache_test, menu, menu_block, menu_block_export, menu_per_role, menu_test, message, message_example,
message_notify, message_notify_example, message_notify_test, message_og_example, message_subscribe,
message_subscribe_email, message_subscribe_ui, messaging, messaging_htmlmail, messaging_mail, messaging_simple,
messaging_template, migrate, migrate_d2d, migrate_d2d_example, migrate_example, migrate_example_baseball,
migrate_example_oracle, migrate_ui, mimemail, mimemail_action, mimemail_compress, module_filter, module_test,
nfstest, nice_menus, node, node_access_test, node_adoption, node_limit, node_limit_interval, node_limit_role,
node_limit_type, node_limit_user, node_limit_userofrole, node_reference, node_test, node_test_exception,
nodeformsettings, noderefcreate, nodereference_url, nodereferrer, notifications, notifications_account,
notifications_content, notifications_scheduler, notifications_tags, notifications_ui, notifications_user,
notifications_views, number, oauth_common, oauth_common_providerui, og, og_access, og_checkboxes, og_context,
og_context_comment, og_example, og_extras, og_field_access, og_node_link, og_register, og_test, og_ui, og_views,
openid, openid_test, options, overlay, page_manager, panels, panels_ipe, panels_mini, panels_node, path, path_test,
pathauto, pay, pay_node, pay_progress, php, pm_block_user, pm_email_notify, poll, privatemsg, privatemsg_filter,
privatemsg_limits, privatemsg_realname, privatemsg_roles, privatemsg_rules, profile, profile2, profile2_i18n,
profile2_og_access, profile2_page, progress, psr_0_test, quicktabs, quicktabs_tabstyles, radioactivity,
radioactivitydefaults, rdf, rdf_test, realname, realname_registration, references, references_dialog, remember_me,
requirements1_test, requirements2_test, resume, resume_access, rules, rules_admin, rules_i18n, rules_scheduler,
rules_scheduler_test, rules_test, scald, scald_audio, scald_dailymotion, scald_dnd_library, scald_flash,
scald_image, scald_quickstart, scald_vimeo, scald_youtube, scroll_to_top, search, search_api, search_api_db,
search_api_facetapi, search_api_test, search_api_views, search_embedded_form, search_extra_type, session_test,
shortcut, shs, simpletest, skinr, skinr_context, skinr_context_test, skinr_context_ui, skinr_panels,
skinr_panels_test, skinr_test, skinr_test_incompatible, skinr_ui, skinr_ui_test, smtp, social_share, standard,
statistics, statuses, statuses_scald, statuses_tags, stringoverrides, stringoverrides_migrate, strongarm, stylizer,
syslog, system, system_charts, system_dependencies_test, system_incompatible_core_version_dependencies_test,
system_incompatible_core_version_test, system_incompatible_module_version_dependencies_test,
system_incompatible_module_version_test, system_test, tabtamer, tap_import, taskbar, taskbar_activity,
taskbar_activity_example, taskbar_migrate, taskbar_tacore, taskbar_ui, taskbar_views, taxonomy, taxonomy_test,
terms_of_use, text, theme_test, themekey, themekey_compat, themekey_debug, themekey_example, themekey_features,
themekey_ui, themekey_user_profile, timeago, token, token_field, token_test, token_tweaks, toolbar, tracker,
translation, translation_test, trigger, trigger_test, update, update_script_test, update_test, update_test_1,
update_test_2, update_test_3, url_alter_test, user, user_form_test, user_reference, user_relationship_blocks,
user_relationship_defaults, user_relationship_elaborations, user_relationship_implications,
user_relationship_invites, user_relationship_mailer, user_relationship_node_access, user_relationship_privatemsg,
user_relationship_service, user_relationship_views, user_relationships, user_relationships_panels_visibility,
user_relationships_rules, user_relationships_test, user_relationships_ui, user_restrictions, user_restrictions_ui,
variable, variable_admin, variable_advanced, variable_example, variable_realm, variable_store, variable_views,
video_embed_facebook, video_embed_field, views, views_accordion, views_autocomplete_filters, views_autorefresh,
views_bulk_operations, views_content, views_content_cache, views_fixed_grid, views_litepager, views_load_more,
views_php, views_slideshow, views_slideshow_cycle, views_test, views_ticker, views_ui, views_ui_basic, workflow,
workflow_access, workflow_actions, workflow_admin_ui, workflow_cleanup, workflow_extensions, workflow_revert,
workflow_rules, workflow_search_api, workflow_vbo, workflow_views, xmlrpc_test, acquia_marina, bacquia_marina,
bartik, fusion_core, fusion_starter, fusion_starter_lite, garland, seven, stark.
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Rest of the site is working fine when UC is disabled.
Regards