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Pisses me off when (in this case, my own project that is being resurrected from 6 years ago) uses third party dependencies from DevExpress and Divelements, and now, trying to install the exact DevExpress version from then, my registration key is no longer valid. And Divelements keeled over in 2013, and of course their online registration doesn't work either. Not to mention that even their DLL, when installing it as "evaluation", does with Invalid pointer compiler error.
Then there's the usual nightmare of .NET version. This code was built with .NET 2.0 and 3.5, neither of which I have installed (I only have 4.5 - 4.6.1), so got to fix all the framework references in a bunch of projects. I suppose there's a utility to do that, maybe even VS2015 has a function for that, but I didn't bother looking.
So far, I've got 2 of the 4 applications running - the server app and the schema designer. The form designer is a b*tch because of the DevExpress and Divelements references, I'm keeping my fingers crossed that upgrading the DX references to their latest works, but I'm a pessimist. The Divelements Sandock thing will be a PITA, I'll probably have to replace it with the open source WeifenLuo docking manager, or, IIRC, .NET exposes their docking system now.
And of course I get a bunch of deprecation warnings on the Oracle .NET references, but the stuff still works. Though figuring out the tnsnames.ora was a blast to the past, NOT!
Word to the wise - when you archive a project, create a VM and put everything there, and make sure it all compiles and builds in the VM. I did that, creating a VM, and the VM still worked, but I appear to never have tried compiling the code.    at myself.
Marc
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My only comment: You are a lucky man to handle "only" 6 year old legacy Projects. I Need to handle 14 years old legacy Projects. Please a can of mercy with me 
Bruno
modified 19-Jan-21 21:04pm.
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You have my empathy and sympathy!
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Thank you so much 
Bruno
modified 19-Jan-21 21:04pm.
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I feel your pain...
We're philosophical about power outages here. A.C. come, A.C. go.
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Wow! Good to know that I'm not the only one in this boat!
I've finally got the mix to where I'm working in .NET more than VB6 IDE. But there's still two large (330K loc) projects and around 6 dozen modules and utilities that need to be rebuilt...
"Go forth into the source" - Neal Morse
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You are very welcome. Maybe we can have a talk therapy 
It is really really is a cruelty to be responsible for legacy apps.
Bruno
modified 19-Jan-21 21:04pm.
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I've seen COPYRIGHT 1966-2015... That particular program was born on an S/360 and is still alive (not GLaDOS though )
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I'll join the party. Mine's 17-years old. Anyone care to top that?
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Marc Clifton wrote: Word to the wise - when you archive a project, create a VM and put everything there, and make sure it all compiles and builds in the VM.
Simpeler; don't use DevExpress, and try to eliminate any other dependency.
Worked for the Excel-team
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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Eddy Vluggen wrote: Simpeler; don't use DevExpress, and try to eliminate any other dependency.
Indeed - the whole app should have been coded with Excel macros!
Marc
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Sure. Just make sure the version and localization of all Excel installation matches: it's a pain to fix macros that don't work because the commands in the macros themselves are localized ... 
GOTOs are a bit like wire coat hangers: they tend to breed in the darkness, such that where there once were few, eventually there are many, and the program's architecture collapses beneath them. (Fran Poretto)
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That's the most absurd design choice I ever saw in all my life. It's a special stupid kind of stupid, the epitome of what could be wrong.
GCS d--- s-/++ a- C++++ U+++ P- L- E-- W++ N++ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t++ 5? X R++ tv-- b+ DI+++ D++ G e++>+++ h--- ++>+++ y+++* Weapons extension: ma- k++ F+2 X
If you think 'goto' is evil, try writing an Assembly program without JMP. -- TNCaver
When I was six, there were no ones and zeroes - only zeroes. And not all of them worked. -- Ravi Bhavnani
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 Wise words.
It sucks that you have to go through this. 
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You don't have copies of the 3rd party assemblies? Maybe in source control?
If it's not broken, fix it until it is
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Kevin Marois wrote: You don't have copies of the 3rd party assemblies?
I have copies of the assemblies, so I could reference those (except Sandock, not sure how that failed), but I'm worried that if I reference the old DevExpress assemblies without properly registering them at installation, they'll be in trial mode. I didn't try that, but so far, the upgrade from DX 10.1 to 15.3 has worked, though I haven't run the app yet (due to other errors.)
I would really expect though, that having a complete copy of the installer and a text file on the registration keys, that I should just be able to install this stuff.
Online registration sucks, IMO.
Marc
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.NET 2.0? You lucky bastard! 
I've had VB6 legacy projects that worked with libraries that are long gone, and third party tools that have advanced by 10 (non-compatible) versions, written for hardware that can't be bought anymore, not to mention the 80's database (forgot the name)...
Luckily I had a coworker who worked with this sort of stuff almost daily... And liked it (I don't think he learned anything new after 1999 or something, his .NET code was horrible) 
What do you mean this isn't a competition?
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Last fall I was handed an MFC project from the late 90's originally created - by a company that long since went poof (hence why we got the work)- by porting from an even older C/*Nix (probably Solaris) application. One of it's dependencies was for something called the Black Ice Imaging SDK[^]. Once we replaced the include block for all the 15yo headers with an include block for the headers in their newest version (at some point they shuffled where what was exposed); everything just worked. 
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason?
Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful?
--Zachris Topelius
Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies.
-- Sarah Hoyt
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Dan Neely wrote: everything just worked
You're not supposed to say that. This is a legacy-complain thread 
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What do you think the part where I mentioned MFC was. 
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason?
Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful?
--Zachris Topelius
Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies.
-- Sarah Hoyt
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I was feeling sorry for you, until you said "everything just worked" (that's where the envy kicked in)
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The codebase as a whole was lots of 'fun' ("our training will make sure the user never tries doing any steps out of order or stop a procedure halfway through in favor of something else", "I fixed all the graphics glitches by stuffing some extra calls to repaint the control, it's all good now") in ways that kept me and a coworker busy fixing stuff for a while; it was just the library upgrade that went smoothly.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason?
Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful?
--Zachris Topelius
Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies.
-- Sarah Hoyt
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The legacy project I am working on right now is in Core PHP/jquery. No Framework, Just Core PHP.
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Member 10854216 wrote: Just Core PHP.
Sorry man, PHP is awful in all of its forms
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I know 
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