Executing batch crashes server 4.0.0.2496 and 4.0.1.2692

[cincuranet]

This piece of code (based on structure from 11.batch.cpp) and doing batch->execute crashes the remote server, version 4.0.0.2496 and 4.0.1.2692.

att = prov->attachDatabase(&status, "192.168.66.48:test.fdb", 0, NULL);
tra = att->startTransaction(&status, 0, NULL);

FB_MESSAGE(Msg1, ThrowStatusWrapper,
(FB_VARCHAR(5), id)
(FB_VARCHAR(10), name)
) project1(&status, master);
project1.clear();
IMessageMetadata* meta = project1.getMetadata();

unsigned mesAlign = meta->getAlignment(&status);
unsigned mesLength = meta->getMessageLength(&status);
unsigned char* streamStart = align(streamBuf, mesAlign);

pb = utl->getXpbBuilder(&status, IXpbBuilder::BATCH, NULL, 0);
pb->insertInt(&status, IBatch::TAG_RECORD_COUNTS, 1);

const char* sqlStmt1 = "insert into batch(i) values(?)";
/*auto stmt = att->prepare(&status, tra, 0, sqlStmt1, SAMPLES_DIALECT, 0);
auto batch = stmt->createBatch(&status, meta, pb->getBufferLength(&status), pb->getBuffer(&status));*/
batch = att->createBatch(&status, tra, 0, sqlStmt1, SAMPLES_DIALECT, meta,
pb->getBufferLength(&status), pb->getBuffer(&status));

project1->id.set("BAT11");
project1->name.set("SNGL_REC1");
batch->add(&status, 1, project1.getData());

project1->id.set("BAT12");
project1->name.set("SNGL_REC2");
batch->add(&status, 1, project1.getData());

cs = batch->execute(&status, tra);
print_cs(status, cs, utl);

batch->close(&status);
batch = NULL;