diff --git a/ts/client/src/client.ts b/ts/client/src/client.ts
index a9d96df97..71c973a0d 100644
--- a/ts/client/src/client.ts
+++ b/ts/client/src/client.ts
@@ -37,6 +37,8 @@ export type OracleConfigParams = IdlTypes<OpenbookV2>['OracleConfigParams'];
 export type OracleConfig = IdlTypes<OpenbookV2>['OracleConfig'];
 export type MarketAccount = IdlAccounts<OpenbookV2>['market'];
 export type OpenOrdersAccount = IdlAccounts<OpenbookV2>['openOrdersAccount'];
+export type OpenOrdersIndexerAccount =
+  IdlAccounts<OpenbookV2>['openOrdersIndexer'];
 export type EventHeapAccount = IdlAccounts<OpenbookV2>['eventHeap'];
 export type BookSideAccount = IdlAccounts<OpenbookV2>['bookSide'];
 export type LeafNode = IdlTypes<OpenbookV2>['LeafNode'];
@@ -151,6 +153,16 @@ export class OpenBookV2Client {
     }
   }
 
+  public async getOpenOrdersIndexer(
+    publicKey: PublicKey,
+  ): Promise<OpenOrdersIndexerAccount | null> {
+    try {
+      return await this.program.account.openOrdersIndexer.fetch(publicKey);
+    } catch {
+      return null;
+    }
+  }
+
   public async getEventHeap(
     publicKey: PublicKey,
   ): Promise<EventHeapAccount | null> {
@@ -196,8 +208,8 @@ export class OpenBookV2Client {
     name: string,
     quoteMint: PublicKey,
     baseMint: PublicKey,
-    quoteLoteSize: BN,
-    baseLoteSize: BN,
+    quoteLotSize: BN,
+    baseLotSize: BN,
     makerFee: BN,
     takerFee: BN,
     timeExpiry: BN,
@@ -247,8 +259,8 @@ export class OpenBookV2Client {
       .createMarket(
         name,
         oracleConfigParams,
-        quoteLoteSize,
-        baseLoteSize,
+        quoteLotSize,
+        baseLotSize,
         makerFee,
         takerFee,
         timeExpiry,
@@ -314,7 +326,7 @@ export class OpenBookV2Client {
         Buffer.from('OpenOrders'),
         this.walletPk.toBuffer(),
         market.toBuffer(),
-        accountIndex.toBuffer('le', 4),
+        accountIndex.toArrayLike(Buffer, 'le', 4),
       ],
       this.programId,
     );
diff --git a/ts/client/src/market.ts b/ts/client/src/market.ts
index 801628b72..efbd67caf 100644
--- a/ts/client/src/market.ts
+++ b/ts/client/src/market.ts
@@ -1,4 +1,9 @@
-import { PublicKey, type Connection, type AccountInfo } from '@solana/web3.js';
+import {
+  PublicKey,
+  type Connection,
+  type AccountInfo,
+  type Message,
+} from '@solana/web3.js';
 import { getFilteredProgramAccounts } from './client';
 import { utils, Program, type Provider, getProvider } from '@coral-xyz/anchor';
 
@@ -27,7 +32,6 @@ export async function findAccountsByMints(
   ];
   return await getFilteredProgramAccounts(connection, programId, filters);
 }
-
 interface Market {
   market: string;
   baseMint: string;
@@ -55,12 +59,13 @@ export async function findAllMarkets(
     await connection.getSignaturesForAddress(eventAuthority)
   ).map((x) => x.signature);
   const batchSignatures: [string[]] = [[]];
-  for (var i = 0; i < signatures.length; i += BATCH_TX_SIZE) {
+  for (let i = 0; i < signatures.length; i += BATCH_TX_SIZE) {
     batchSignatures.push(signatures.slice(0, BATCH_TX_SIZE));
   }
   for (const batch of batchSignatures) {
     const allTxs = await connection.getTransactions(batch, {
       commitment: 'confirmed',
+      maxSupportedTransactionVersion: 0,
     });
     for (const tx of allTxs) {
       if (
@@ -68,38 +73,41 @@ export async function findAllMarkets(
         tx?.meta?.innerInstructions !== undefined
       )
         for (const innerIns of tx.meta.innerInstructions) {
-          // validate key and program key
-          const eventAuthorityKey = innerIns.instructions[1].accounts[0];
-          const programKey = innerIns.instructions[1].programIdIndex;
-
-          if (
-            tx.transaction.message.accountKeys[eventAuthorityKey].toString() !==
-              eventAuthority.toString() ||
-            tx.transaction.message.accountKeys[programKey].toString() !==
-              programId.toString()
-          ) {
-            continue;
-          } else {
-            const ixData = utils.bytes.bs58.decode(
-              innerIns.instructions[1].data,
-            );
-            const eventData = utils.bytes.base64.encode(ixData.slice(8));
-            const event = program.coder.events.decode(eventData);
+          if (innerIns.instructions?.[1]?.accounts?.[0] !== undefined) {
+            console.log('err');
+            // validate key and program key
+            const eventAuthorityKey = innerIns.instructions[1].accounts[0];
+            const programKey = innerIns.instructions[1].programIdIndex;
+            if (
+              (tx.transaction.message as Message).staticAccountKeys[
+                eventAuthorityKey
+              ].toString() !== eventAuthority.toString() ||
+              (tx.transaction.message as Message).staticAccountKeys[
+                programKey
+              ].toString() !== programId.toString()
+            ) {
+              continue;
+            } else {
+              const ixData = utils.bytes.bs58.decode(
+                innerIns.instructions[1].data,
+              );
+              const eventData = utils.bytes.base64.encode(ixData.slice(8));
+              const event = program.coder.events.decode(eventData);
 
-            if (event != null) {
-              const market: Market = {
-                market: (event.data.market as PublicKey).toString(),
-                baseMint: (event.data.baseMint as PublicKey).toString(),
-                quoteMint: (event.data.quoteMint as PublicKey).toString(),
-                name: event.data.name as string,
-                timestamp: tx.blockTime,
-              };
-              marketsAll.push(market);
+              if (event != null) {
+                const market: Market = {
+                  market: (event.data.market as PublicKey).toString(),
+                  baseMint: (event.data.baseMint as PublicKey).toString(),
+                  quoteMint: (event.data.quoteMint as PublicKey).toString(),
+                  name: event.data.name as string,
+                  timestamp: tx.blockTime,
+                };
+                marketsAll.push(market);
+              }
             }
           }
         }
     }
   }
-
   return marketsAll;
 }