The following tips will help you avoid unexpected behavior when creating, editing, and publishing Articulate Presenter '09 courses.
Local hard drive only
Be sure you're working on your local hard drive (typically your C: drive). Working on a network drive or an external USB drive can cause erratic behavior due to latency, such as file corruption, an inability to save changes you've made to your project, and loss of resources.
If you need to place a copy of your project on a network drive or a USB drive for backup or versioning purposes, it's fine to do that after you've created an Articulate Package. Copy the resulting zip file to your network drive or USB drive. Avoid re-opening the presentation until you've copied the zip file back to your local hard drive and extracted it.
Similarly, hosting published output on a network drive isn't supported. Instead, place your content in the location for which it was published. (For example, if you published for web, upload your content to a web server; if you published for LMS, upload your content to an LMS, etc.)
File paths and naming conventions
Be sure the file paths to your Articulate Presenter presentation and your publish location are well under the 260-character limit imposed by Microsoft Windows.
Also, avoid using special characters, accents, or symbols in file paths and file names. You can find more information about naming files and paths in Windows operating systems in this Microsoft article.