# Teal version mismatch **URL:** \ **Category:** Uncategorized\ **Tags:** testnet, teal\ **Created:** [May 2, 2021, 9:50am UTC](https://forum.algorand.co/t/teal-version-mismatch/3145 "2021-05-02T09:50:45Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![pagito](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@pagito](https://forum.algorand.co/u/pagito)\ **Post date:** [May 2, 2021, 9:50am UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/1 "2021-05-02T09:50:45Z")
Hi everyone, I’m writing my very first SC in algorand. Started with Teal3, since it has some new opcodes and global vars, but I got “version mismatch” error when debugging… Then, I switched to Teal2. But still, the same problem occurs when I try to debug the code. Simple stateful Smart Contract in Teal2, which saves app creator: ```nohighlight #pragma version 2 int 0 txn ApplicationID == // bz not_creation byte "Creator" txn Sender app_global_put int 1 return bz failed not_creation: byte "Creator" app_global_get txn Sender == // bz failed int 1 return failed: int 0 return ``` Command creating the app: `goal app create --creator --approval-prog ./creator2.teal --global-byteslices 1 --global-ints 2 --local-byteslices 3 --local-ints 4 --clear-prog ./clear.teal --out=dump2.dr --dryrun-dump` Debug command: `tealdbg debug creator2.teal -d dump2.dr` Results: ```nohighlight Debug error: 11 errors: 1: version mismatch: assembling v2 with v0 assembler 4: field ApplicationID available in version 2. Missed #pragma version? 5: == arg 0 wanted type any got None 6: bz opcode was introduced in TEAL v2 9: app_global_put opcode was introduced in TEAL v2 11: return opcode was introduced in TEAL v2 12: bz opcode was introduced in TEAL v2 15: app_global_get opcode was introduced in TEAL v2 18: bz opcode was introduced in TEAL v2 20: return opcode was introduced in TEAL v2 23: return opcode was introduced in TEAL v2 ``` If I run creator SC for Teal3 ([https://github.com/algorand/smart-contracts/blob/master/devrel/teal3/creator.teal](https://github.com/algorand/smart-contracts/blob/master/devrel/teal3/creator.teal)), then I get this: ```nohighlight Debug error: 16 errors: 1: version mismatch: assembling v3 with v0 assembler 4: field ApplicationID available in version 2. Missed #pragma version? 5: == arg 0 wanted type any got None 6: bz opcode was introduced in TEAL v2 9: app_global_put opcode was introduced in TEAL v2 11: field GlobalNumUint available in version 3. Missed #pragma version? 14: field GlobalNumByteSlice available in version 3. Missed #pragma version? 17: && arg 0 wanted type uint64 got []byte 18: field LocalNumUint available in version 3. Missed #pragma version? 22: field LocalNumByteSlice available in version 3. Missed #pragma version? 25: && arg 0 wanted type uint64 got None 26: bz opcode was introduced in TEAL v2 31: global CreatorAddress available in version 3. Missed #pragma version? 33: bz opcode was introduced in TEAL v2 35: return opcode was introduced in TEAL v2 38: return opcode was introduced in TEAL v2 ``` I guess the problem for both is that my algo node environment works for Teal V1. How do I change that, any ideas? Thanks in advance! ---
**Author:** ![fabrice](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@fabrice](https://forum.algorand.co/u/fabrice)\ **Post date:** [May 2, 2021, 6:30pm UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/2 "2021-05-02T18:30:21Z")
Which version of `goal` are you using? Can you run `goal version -v` and `goal node status`? PS: I’ve edited your post and change the simple backquote to triple backquotes to format the text better. ---
**Author:** ![pagito](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@pagito](https://forum.algorand.co/u/pagito)\ **Post date:** [May 3, 2021, 2:22am UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/3 "2021-05-03T02:22:43Z")
Hey, ``` goal version -v ``` Version: [v1 v2] GenesisID: testnet-v1.0 Build: 2.5.5.stable [rel/stable] (commit #304815d0) ``` goal node status ``` Last committed block: 1907274 Time since last block: 3.8s Sync Time: 64648.1s Round for next consensus protocol: 1907275 Next consensus protocol supported: true Last Catchpoint: Genesis ID: testnet-v1.0 Genesis hash: SGO1GKSzyE7IEPItTxCByw9x8FmnrCDexi9/cOUJOiI= The machine is Ubuntu 20.04.2. I followed docs “Run a node”, which installed mainnet network and then I switched to testnet by replacing genesys file… P.S. Thanks for editing, so triple backquote was what I needed. 🙂 ---
**Author:** ![pagito](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@pagito](https://forum.algorand.co/u/pagito)\ **Post date:** [May 3, 2021, 3:59am UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/4 "2021-05-03T03:59:09Z")
I have a different scenario with a sandbox on a Windows machine. ``` goal version -v ``` Version: [v1 v2] GenesisID: sandnet-v1 Build: 2.5.5.stable [rel/stable] (commit #304815d0) ``` goal node status ``` Round for next consensus protocol: 2641 Next consensus protocol supported: true Last Catchpoint: Genesis ID: sandnet-v1 Genesis hash: 2nnIGT/c+wuwSeR+NAPXDV/XkJCBnrxf8ccR9xlRXfg= If I debug Teal V2 program: `tealdbg debug creator2.teal` Erorr: ` Debug error: 1 error: 1: version mismatch: assembling v2 with v3 assembler` From my understanding Teal is compiled with V3 in this case… Even though the goal version says v1, v2. (on both, ubuntu machine and sandbox). How do I control this? I haven’t run goal version individually. It is running with tandem algod. ---
**Author:** ![pagito](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@pagito](https://forum.algorand.co/u/pagito)\ **Post date:** [May 3, 2021, 4:25am UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/5 "2021-05-03T04:25:55Z")
Can anyone explain why my posts were flagged and became hidden? I removed the links from the Goal command responses if that was the reason… ---
**Author:** ![fabrice](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@fabrice](https://forum.algorand.co/u/fabrice)\ **Post date:** [May 3, 2021, 1:21pm UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/6 "2021-05-03T13:21:17Z")
The spam detection system got a bit overzealous… Regarding your problem, it is possible (but I may be wrong) that `tealdbg` only supports the latest TEAL version, that is TEAL v3. Just switch to `#pragma version 3`. It is safe to switch from TEAL v2 to TEAL v3 without changing the code. **Note that it is not safe to switch from TEAL v1 to TEAL v2.** ---
**Author:** ![pagito](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@pagito](https://forum.algorand.co/u/pagito)\ **Post date:** [May 3, 2021, 4:53pm UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/7 "2021-05-03T16:53:33Z")
This time it worked. Not sure what was the problem exactly, cuz I tried V3 with approval program. Could be the fix was adding `#pragma version 3` to clear program as well. Anyway, thanks for help! The reason I started debugging this example, is different error I am getting from SDK when sending transaction to the network. Shall I post it here or open a new post for it? ---
**Author:** ![fabrice](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@fabrice](https://forum.algorand.co/u/fabrice)\ **Post date:** [May 3, 2021, 7:03pm UTC](https://forum.algorand.co/t/teal-version-mismatch/3145/8 "2021-05-03T19:03:28Z")
Yes, you may need both the approval and the clear program to be in version 3. Please create a new post for the other error.