I am using the demo version of DBIsam V4, to assess if we should upgrade.
Using the code below with attached table produces an AV error.

procedure TForm1.Button1Click(Sender: TObject);
begin
 DBIsamTable2.DatabaseName := 'E:\Sandbox\AYR\DBIsam Tests\Bin';
 DBIsamTable2.Active := False;
 DBISAMTable2.TableName :=  'CoDBList';
 if DBISAMTable2.Exists then
 begin
   DBIsamTable2.UpgradeTable;              << Error happens here.
 end;
end;

Error message:
Project Project1.exe raised exception class EAccessViolation with message 'Access violation at address 009C41D8 in module 'dbisamr438rsdelphiwin32xe4.bpl'. Read of address 00000030'.

Any help would be appreciated.

Looks like an issue with dbisam 4.38 version - i'm seeing the same error
as you.  Trying upgrade in 4.38 b2 dbsys results in same AV.

However 4.37b3 dbsys upgraded your table just fine.

Raul


On 4/22/2014 2:29 AM, Bob wrote:
> I am using the demo version of DBIsam V4, to assess if we should upgrade.
> Using the code below with attached table produces an AV error.
>
> procedure TForm1.Button1Click(Sender: TObject);
> begin
>    DBIsamTable2.DatabaseName := 'E:\Sandbox\AYR\DBIsam Tests\Bin';
>    DBIsamTable2.Active := False;
>    DBISAMTable2.TableName :=  'CoDBList';
>    if DBISAMTable2.Exists then
>    begin
>      DBIsamTable2.UpgradeTable;              << Error happens here.
>    end;
> end;
>
> Error message:
> Project Project1.exe raised exception class EAccessViolation with message 'Access violation at address 009C41D8 in module 'dbisamr438rsdelphiwin32xe4.bpl'. Read of address 00000030'.
>
> Any help would be appreciated.
>

I created an incident report so Tim will see it sooner - he might not
read this forum for a while

Raul

On 4/22/2014 2:23 PM, Raul wrote:
> Looks like an issue with dbisam 4.38 version - i'm seeing the same error
> as you.  Trying upgrade in 4.38 b2 dbsys results in same AV.
>
> However 4.37b3 dbsys upgraded your table just fine.
>
> Raul

Raul,
Thank you for you prompt responses.
Unfortunately this project has landed at an awkward time, as I am now going on leave, so I will not be able to see (or respond to), any further comments/developments; until I return.

Thanks again

Regards
Robbert W.

Raul wrote:

I created an incident report so Tim will see it sooner - he might not
read this forum for a while

Raul

On 4/22/2014 2:23 PM, Raul wrote:
> Looks like an issue with dbisam 4.38 version - i'm seeing the same error
> as you.  Trying upgrade in 4.38 b2 dbsys results in same AV.
>
> However 4.37b3 dbsys upgraded your table just fine.
>
> Raul

Bob,

<< Thank you for you prompt responses.
Unfortunately this project has landed at an awkward time, as I am now going
on leave, so I will not be able to see (or respond to), any further
comments/developments; until I return. >>

I received the incident report from Raul (thanks Raul !), and this issue
will be fixed in 4.38 B3.

Tim Young
Elevate Software
www.elevatesoft.com