I upgraded from RoboHTML version 5 to version 8 via the trial download of 8. When I attempted to open a RH5 project into RH8, this error message appeared. Ran the fix described and Success!
The whole process:
What I did:
Step 1. Uninstalled RoboHelp 5 and the two patches to RoboHelp 5.
Step 2. Installed RoboHTML 8.
Step 3. Start RoboHTML 8, typed in the serial number at the prompt. RH8 should display.
Step 4: Floundering. I tried opening an existing RH5 project in RH8 and I got an error, "Unable to initialize DAO/Jet db engine." I also found that I was unable to create a help project from scratch. This told me that it was an installation problem, not a file import problem.
I went into Control Panel>Add or Remove Programs, chose Uninstall, then when offered the option to validate the install I chose that radio button. Process ran. Received message that the validation was successful.
I then downloaded RoboHelp again and re-installed... still didn't work, so I checked the forums and found Step 5. I'm thinking that you can skip the floundering step and go directly to Step 5.
Step 5. Ran patch as follows:
Click on Start and then on Run. Paste the following into the run text box:
Regsvr32.exe /u C:\progra~1\common~1\micros~1\dao\dao360.dll
Click the OK button.
Alert message should display that registering the DLL succeeded.
Click Start and then Run again, and paste the following into the run text box:
Regsvr32.exe C:\progra~1\common~1\micros~1\dao\dao360.dll
and click OK
Alert message should display that registering the DLL succeeded.
Step 6: Success! Once I followed these steps, I could then start a new project from scratch in RH8 and also import an existing online help project from RH5 into RH8.
Before importing any existing RH5 help into RH8, be sure to make a ZIP and put it somewhere safe, just in case things blow up. It shouldn't, but a backup is cheap insurance.
Note that once you open the RH5 project, you won't be able to open it in RH5 again.
NOTE: RH8 looks far more like Dreamweaver CS4 than like RH5. There is going to be a learning curve on this one. I don't even immediately see how to define my TOC... I'm sure it's there, it's just hiding.