Usedll() fails to load

[vigorvick]

Hi,

I'm porting a Installshield 2.01 project to IS 2008. The usedll function fails to load after porting it to IS 2008. I have checked the path, the path is fine and the dll exists in the path. Does any one know the cause or is there any limitation? Please help.

Thanks.

[RobertDickau]

Could you post the specific code that fails?

[vigorvick]

No big deal here,

if (0==UseDLL(szDll)) then
g_nRet = nisoppep.ApiDoInstall(hMSI);
Sprintf(g_szMsg,"DoInstall returned %d",g_nRet);
else
g_szMsg = "DoInstallUpdate: Unable to load nisoppep.dll";
g_nRet = -1;
endif;

I suspect that the version of the created dll is obsolete that it is not supported, can it be the case?

[usmanjamil]

vigorvick wrote:
No big deal here,

if (0==UseDLL(szDll)) then
g_nRet = nisoppep.ApiDoInstall(hMSI);
Sprintf(g_szMsg,"DoInstall returned %d",g_nRet);
else
g_szMsg = "DoInstallUpdate: Unable to load nisoppep.dll";
g_nRet = -1;
endif;

I suspect that the version of the created dll is obsolete that it is not supported, can it be the case?

I hope you are not trying to load a 64 bit compiled dll on a 64 bit platform, coz that Installshield does not support that. I haven't tested my Installer on a win2k8 32bit machine but I've had same problem with UseDll on a 64 bit platform.

[vigorvick]

Hi Thanks a lot to both of you, the issue has been solved.

[dhclark]

Hi, vigorvick,

Your last post says that the problem is solved. How did you solve it? I am having a similar problem and would like to know your solution. I want our customers to have the best experience, and don't want to load them down with lots of overhead and prerequisites. 🙂

Thanks!

Dave

[Kelter]

ditto here. is it true that you can't load a 64-bit dll using UseDll? how, then, shall i load a 64bit dll?