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Autocad Fatal Error Acismobj20dbx Free

The error message "Fatal Error: Unhandled Access Violation Reading 0x0000 Exception at... acismobj20dbx.arx" indicates a critical failure within AutoCAD related to the ObjectARX module responsible for Spatial/Mechanical 3D modeling.

The file acismobj20dbx.arx is a core AutoCAD component (specifically related to the Autodesk Shape Manager and 3D Solid modeling). When this module fails, it typically means the software encountered corrupted 3D geometry, a conflict with a third-party plugin, or a damaged installation file.

A corrupted user profile can trigger the "acismobj20dbx free" error. autocad fatal error acismobj20dbx free

Since this error often triggers during the regeneration or manipulation of 3D objects, the graphics card is the primary suspect.

The error means:

Critical: This error is often file‑specific. If only one drawing crashes, the problem is inside that file.

If the file opens but crashes when selecting/moving 3D solids: The error message "Fatal Error: Unhandled Access Violation

Conflicts between ACIS and GPU drivers are common.

  • Once inside, go to Graphics Performance (3DCONFIG command) and disable Hardware Acceleration.

    • Once fixed, take these free steps to avoid recurrence: Critical: This error is often file‑specific

    Application Log
    Timestamp Level Category Message
    09:44:30.085779 trace system.CModule 
    Loading "log" application component
    09:44:30.086787 trace system.CModule 
    Loading "request" application component
    09:44:30.087656 trace system.CModule 
    Loading "urlManager" application component
    09:44:30.088510 trace system.CModule 
    Loading "cache" application component
    09:44:30.092225 trace system.web.filters.CFilterChain 
    Running filter PostController.filteraccessControl()
    09:44:30.092628 trace system.CModule 
    Loading "user" application component
    09:44:30.093569 trace system.CModule 
    Loading "session" application component
    09:44:30.094717 trace system.CModule 
    Loading "clientScript" application component
    09:44:30.099728 trace system.CModule 
    Loading "widgetFactory" application component
    09:44:30.102283 trace system.CModule 
    Loading "assetManager" application component
    09:44:30.102984 trace system.db.ar.CActiveRecord 
    Post.count()
    09:44:30.102998 trace system.CModule 
    Loading "db" application component
    09:44:30.103629 trace system.db.CDbConnection 
    Opening DB connection
    09:44:30.110373 trace system.db.CDbCommand 
    Querying SQL: SHOW FULL COLUMNS FROM `post`
    09:44:30.112150 trace system.db.CDbCommand 
    Querying SQL: SHOW CREATE TABLE `post`
    09:44:30.112720 trace system.db.ar.CActiveRecord 
    Post.count() eagerly
    09:44:30.112853 trace system.db.CDbCommand 
    Querying SQL: SELECT COUNT(DISTINCT `t`.`id`) FROM `post` `t`  WHERE
(rating>9 AND status=2)
    09:44:30.114959 trace system.db.ar.CActiveRecord 
    Post.findAll()
    09:44:30.115180 trace system.db.CDbCommand 
    Querying SQL: SELECT `t`.`id` AS `t0_c0`, `t`.`title` AS `t0_c1`,
`t`.`author` AS `t0_c2`, `t`.`author_link` AS `t0_c3`, `t`.`source` AS
`t0_c4`, `t`.`content` AS `t0_c5`, `t`.`purchase_url` AS `t0_c6`,
`t`.`genre` AS `t0_c7`, `t`.`flv_link` AS `t0_c8`, `t`.`tags` AS `t0_c9`,
`t`.`query` AS `t0_c10`, `t`.`status` AS `t0_c11`, `t`.`create_time` AS
`t0_c12`, `t`.`update_time` AS `t0_c13`, `t`.`author_id` AS `t0_c14`,
`t`.`plays` AS `t0_c15`, `t`.`itunes_clicks` AS `t0_c16`,
`t`.`amazon_clicks` AS `t0_c17`, `t`.`emusic_clicks` AS `t0_c18`,
`t`.`image_link` AS `t0_c19`, `t`.`rating` AS `t0_c20`, `t`.`loved_count`
AS `t0_c21`, `t`.`fail_count` AS `t0_c22`, `t`.`offered` AS `t0_c23` FROM
`post` `t`  WHERE (rating>9 AND status=2) ORDER BY create_time DESC LIMIT
15
    09:44:30.117111 trace system.db.CDbCommand 
    Querying SQL: SHOW FULL COLUMNS FROM `user_favorites`
    09:44:30.117835 trace system.db.CDbCommand 
    Querying SQL: SHOW CREATE TABLE `user_favorites`
    09:44:30.118017 trace system.db.CDbCommand 
    Querying SQL: SELECT `t`.`post_id` AS `c`, COUNT(*) AS `s` FROM
`user_favorites` `t` WHERE (user_id=0) AND (`t`.`post_id` IN ('3062',
'3057', '3058', '3059', '3060', '3061', '3056', '3055', '3053', '3054',
'3052', '3051', '3050', '3049', '3048')) GROUP BY `t`.`post_id`
    09:44:30.128470 trace system.CModule 
    Loading "coreMessages" application component