473,388 Members | 1,073 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,388 software developers and data experts.

Class does not support Automation or does not support expected interface

Hey guys!
I'm having some issues with one of my installer packages i compiled with Microsoft Visual Studio 2005. (VB installer is buggy as hell and wouldn't work on half of our machines no matter what we did with it) The installer wraps a VB 6.0 application. When i install the package on my machine everything works flawlessly. When i installed it on the user's machine, once again, everything ran great. When we uninstalled it and installed it again, we ended up getting the following error:
Run-Time Error 430 "Class does not support Automation or does not support expected interface"
Here is the kicker, when we try to open the actual project on user's machine in Visual Basic 6.0, he can run and execute the application without any problems whatsoever. No missing dependecies - nothing! However, when he tries to run it from a shortcut that the installer puts on his desktop he gets the message mentioned before.
The shortcut itself is passing command-line arguments. When we tried getting rid of these arguments and simply hardcoding their values into the code, the application ran fine from the shortcut on his desktop; even though the application wasn't using command-line arguments from the shortcut. I tried manually creating the shortcut but that didn't solve the problem either. I really don't know what can be wrong. I check MDAC versions on mine and his computer and both are identical.
Any suggestions?

P.S. This behavior is not happening on the dev. machine of course :(
Jun 26 '07 #1
2 17898
Killer42
8,435 Expert 8TB
Just as another check on what's happening, have you tried filling in the arguments in the Project | Project Properties | Make | Command Line Arguments option in VB on the problem machine? Or is that what you meant when you said you hard-coded them in the program?
Jun 27 '07 #2
Thanks for the response!
The actual project has command-line arguments saved in the properties of the project. During start-up, the command-line is parsed and the arguments are saved into 2 variables. What we did is just skipped the parsing and manually set the variables to what the user is passing through the command-line like so:
Expand|Select|Wrap|Line Numbers
  1. strEnvironment = "test"
After more research, it doesn't even look like it has anything to do with the command-line. It looks like when the user compiles the application in VB environment it starts working. This is what i don't understand, even though the references would show components that got moved out onto their machine from the installer, something is still off as it wouldn't run outside of the VB environment. But when they try compiling with the same components it works. I'm think i'm about as lost as one could possibly be.
Jun 27 '07 #3

Sign in to post your reply or Sign up for a free account.

Similar topics

4
by: jabailo | last post by:
I came across this article while researching a VB6 430 error: INFO: Considerations for Server-Side Automation of Office http://support.microsoft.com/default.aspx?scid=kb;EN-US;q257757 ...
9
by: justanotherguy63 | last post by:
Hi, I am designing an application where to preserve the hierachy and for code substitability, I need to pass an array of derived class object in place of an array of base class object. Since I...
3
by: Robert | last post by:
---EN--- This message has been crossposted in a french speaking newsgroup, english version is at the end. Thanks a lot for your help... --/EN--- Bonjour, Je développe une application...
15
by: qwweeeit | last post by:
Hi all, Elliot Temple on the 1 June wrote: > How do I make Python press a button on a webpage? I looked at > urllib, but I only see how to open a URL with that. I searched > google but no...
10
by: Joe | last post by:
My question is more an OOD question. I know *how* to implement both abstract classes and interfaces. Here's my question - under what circumstacnes does one use an abstract class and under what...
3
by: Robin Tucker | last post by:
It seems that all of the interfaces, such as IDataObject etc. from basic OLE are no longer supported in .NET, although they are implemented (differently). I have an OLE object type and am having...
8
by: Gregory | last post by:
I have a question about using STL containers in C++ class public interface. Lets say that I want to return some container from class method or accept class method parameter as some container. For...
52
by: Ben Voigt [C++ MVP] | last post by:
I get C:\Programming\LTM\devtools\UselessJunkForDissassembly\Class1.cs(360,27): error CS0535: 'UselessJunkForDissassembly.InvocableInternals' does not implement interface member...
162
by: Sh4wn | last post by:
Hi, first, python is one of my fav languages, and i'll definitely keep developing with it. But, there's 1 one thing what I -really- miss: data hiding. I know member vars are private when you...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.