Program Error

I have created a test, published it to SCORM, viewed and taken the test in our LMS, found some changes needed to be made, went back to Lectora and made changes, published with updates and have found something else I want to change...Lectora will not open the file, when I click on it to open it shuts the program down stating an error. Please tell me there's something I can do to open this file. I can open a new one, template, etc. just not this specific file. Please Help!I have created a test, published it to SCORM, viewed and taken the test in our LMS, found some changes needed to be made, went back to Lectora and made changes, published with updates and have found something else I want to change...Lectora will not open the file, when I click on it to open it shuts the program down stating an error. Please tell me there's something I can do to open this file. I can open a new one, template, etc. just not this specific file. Please Help!